diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasActionImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasActionImpl.java
index 8661e0e..f1b54f3 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasActionImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasActionImpl.java
@@ -25,9 +25,14 @@ public class HasActionImpl<Out extends Service, In extends ActionFacet>
 	protected HasActionImpl() {
 		super();
 	}
+
+	public HasActionImpl(Out source, In target) {
+		super(source, target);
+	}
 	
 	public HasActionImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
 	}
+
 }
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasAddActionImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasAddActionImpl.java
index ea2cc4a..9a4a6fc 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasAddActionImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasAddActionImpl.java
@@ -24,7 +24,11 @@ public class HasAddActionImpl<Out extends Service, In extends ActionFacet>
 	protected HasAddActionImpl() {
 		super();
 	}
-
+	
+	public HasAddActionImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public HasAddActionImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasContactImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasContactImpl.java
index 38eff4e..9cee2a5 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasContactImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasContactImpl.java
@@ -22,7 +22,11 @@ public abstract class HasContactImpl<Out extends Resource, In extends ContactFac
 	protected HasContactImpl() {
 		super();
 	}
-
+	
+	public HasContactImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public HasContactImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasContributorImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasContributorImpl.java
index 2160abe..430b1ec 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasContributorImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasContributorImpl.java
@@ -22,6 +22,10 @@ public class HasContributorImpl<Out extends Resource, In extends ContactFacet>
 		super();
 	}
 
+	public HasContributorImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public HasContributorImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasCoverageImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasCoverageImpl.java
index 7f7d2bb..f90d364 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasCoverageImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasCoverageImpl.java
@@ -23,6 +23,10 @@ public abstract class HasCoverageImpl<Out extends Resource, In extends CoverageF
 		super();
 	}
 
+	public HasCoverageImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public HasCoverageImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasCreatorImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasCreatorImpl.java
index f41ba69..11b8c29 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasCreatorImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasCreatorImpl.java
@@ -22,6 +22,10 @@ public class HasCreatorImpl<Out extends Resource, In extends ContactFacet>
 		super();
 	}
 
+	public HasCreatorImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public HasCreatorImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasCuratorImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasCuratorImpl.java
index fecf182..5d92fcf 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasCuratorImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasCuratorImpl.java
@@ -22,6 +22,10 @@ public class HasCuratorImpl<Out extends Resource, In extends ContactFacet>
 		super();
 	}
 
+	public HasCuratorImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public HasCuratorImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasDeveloperImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasDeveloperImpl.java
index 64b3cdc..0ecf39d 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasDeveloperImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasDeveloperImpl.java
@@ -22,6 +22,10 @@ public class HasDeveloperImpl<Out extends Resource, In extends ContactFacet>
 		super();
 	}
 
+	public HasDeveloperImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public HasDeveloperImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasMaintainerImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasMaintainerImpl.java
index b6dc92f..7bc3fb6 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasMaintainerImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasMaintainerImpl.java
@@ -22,6 +22,10 @@ public class HasMaintainerImpl<Out extends Resource, In extends ContactFacet>
 		super();
 	}
 
+	public HasMaintainerImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public HasMaintainerImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasManagerImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasManagerImpl.java
index 59c1e18..7fb1792 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasManagerImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasManagerImpl.java
@@ -22,6 +22,10 @@ public class HasManagerImpl<Out extends Resource, In extends ContactFacet>
 		super();
 	}
 
+	public HasManagerImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public HasManagerImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasMemoryImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasMemoryImpl.java
index 44067e7..01e33c7 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasMemoryImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasMemoryImpl.java
@@ -23,6 +23,10 @@ public abstract class HasMemoryImpl<Out extends Resource, In extends MemoryFacet
 		super();
 	}
 
+	public HasMemoryImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public HasMemoryImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasOwnerImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasOwnerImpl.java
index 7ac3a65..6597a56 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasOwnerImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasOwnerImpl.java
@@ -22,6 +22,10 @@ public class HasOwnerImpl<Out extends Resource, In extends ContactFacet>
 		super();
 	}
 
+	public HasOwnerImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public HasOwnerImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasPersistentMemoryImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasPersistentMemoryImpl.java
index b42e9c4..3330a24 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasPersistentMemoryImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasPersistentMemoryImpl.java
@@ -22,6 +22,10 @@ public class HasPersistentMemoryImpl<Out extends Resource, In extends MemoryFace
 		super();
 	}
 
+	public HasPersistentMemoryImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public HasPersistentMemoryImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasRemoveActionImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasRemoveActionImpl.java
index 80155bc..968a1db 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasRemoveActionImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasRemoveActionImpl.java
@@ -25,6 +25,10 @@ public class HasRemoveActionImpl<Out extends Service, In extends ActionFacet> ex
 		super();
 	}
 	
+	public HasRemoveActionImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public HasRemoveActionImpl(Out source, In target, PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
 	}
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasSpatialCoverageImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasSpatialCoverageImpl.java
index 52ede7e..01c067d 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasSpatialCoverageImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasSpatialCoverageImpl.java
@@ -22,6 +22,10 @@ public class HasSpatialCoverageImpl<Out extends Resource, In extends CoverageFac
 		super();
 	}
 
+	public HasSpatialCoverageImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public HasSpatialCoverageImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasTemporalCoverageImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasTemporalCoverageImpl.java
index 77831ec..0ecfd35 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasTemporalCoverageImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasTemporalCoverageImpl.java
@@ -23,9 +23,13 @@ public class HasTemporalCoverageImpl<Out extends Resource, In extends CoverageFa
 		super();
 	}
 
+	public HasTemporalCoverageImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public HasTemporalCoverageImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
 	}
-
+	
 }
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasVolatileMemoryImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasVolatileMemoryImpl.java
index 3e8d118..db7b344 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasVolatileMemoryImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/HasVolatileMemoryImpl.java
@@ -22,9 +22,13 @@ public class HasVolatileMemoryImpl<Out extends Resource, In extends MemoryFacet>
 		super();
 	}
 
+	public HasVolatileMemoryImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public HasVolatileMemoryImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
 	}
-
+	
 }
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/IsIdentifiedByImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/IsIdentifiedByImpl.java
index 17d7fac..ef0ce9a 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/IsIdentifiedByImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/consistsof/IsIdentifiedByImpl.java
@@ -25,10 +25,14 @@ public class IsIdentifiedByImpl<S extends Resource, T extends Facet> extends
 	protected IsIdentifiedByImpl(){
 		super();
 	}
+
+	public IsIdentifiedByImpl(S source, T target) {
+		super(source, target);
+	}
 	
 	public IsIdentifiedByImpl(S source, T target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
 	}
-	
+
 }
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/ActivatesImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/ActivatesImpl.java
index 1ecbc99..8ef2b58 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/ActivatesImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/ActivatesImpl.java
@@ -22,6 +22,10 @@ public class ActivatesImpl<Out extends Service, In extends Service> extends
 		super();
 	}
 
+	public ActivatesImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public ActivatesImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/BelongsToImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/BelongsToImpl.java
index a152580..ad005fe 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/BelongsToImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/BelongsToImpl.java
@@ -23,6 +23,10 @@ public class BelongsToImpl<Out extends Person, In extends LegalBody> extends
 		super();
 	}
 
+	public BelongsToImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public BelongsToImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/CallsForImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/CallsForImpl.java
index 88aa1fd..4606a77 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/CallsForImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/CallsForImpl.java
@@ -22,6 +22,10 @@ public class CallsForImpl<Out extends Service, In extends Service> extends
 		super();
 	}
 
+	public CallsForImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public CallsForImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/DemandsImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/DemandsImpl.java
index dc036e4..b41f967 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/DemandsImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/DemandsImpl.java
@@ -23,6 +23,10 @@ public class DemandsImpl<Out extends VirtualService, In extends Software>
 		super();
 	}
 
+	public DemandsImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public DemandsImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/DependsOnImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/DependsOnImpl.java
index a420ad1..a504d61 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/DependsOnImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/DependsOnImpl.java
@@ -22,6 +22,10 @@ public class DependsOnImpl<Out extends Software, In extends Software> extends
 		super();
 	}
 
+	public DependsOnImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public DependsOnImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/DiscoversImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/DiscoversImpl.java
index 9e7613c..ffe1655 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/DiscoversImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/DiscoversImpl.java
@@ -21,6 +21,10 @@ public class DiscoversImpl<Out extends EService, In extends EService> extends
 		super();
 	}
 
+	public DiscoversImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public DiscoversImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/EnablesImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/EnablesImpl.java
index 26e9fdb..ed7a07c 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/EnablesImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/EnablesImpl.java
@@ -23,6 +23,10 @@ public class EnablesImpl<Out extends Service, In extends Software> extends
 		super();
 	}
 
+	public EnablesImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public EnablesImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/HostsImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/HostsImpl.java
index 2cb834d..dfbc14c 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/HostsImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/HostsImpl.java
@@ -23,6 +23,10 @@ public class HostsImpl<Out extends Site, In extends Service> extends
 		super();
 	}
 
+	public HostsImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public HostsImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/InvolvesImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/InvolvesImpl.java
index dce100e..0900ab9 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/InvolvesImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/InvolvesImpl.java
@@ -23,6 +23,10 @@ public class InvolvesImpl<Out extends Dataset, In extends Actor> extends
 		super();
 	}
 
+	public InvolvesImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public InvolvesImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsCompliantWithImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsCompliantWithImpl.java
index df8ac6a..400bbe3 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsCompliantWithImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsCompliantWithImpl.java
@@ -26,6 +26,10 @@ public class IsCompliantWithImpl<Out extends Dataset, In extends Schema>
 		super();
 	}
 
+	public IsCompliantWithImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public IsCompliantWithImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsConfiguredByImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsConfiguredByImpl.java
index f90b599..cfa9371 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsConfiguredByImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsConfiguredByImpl.java
@@ -26,6 +26,10 @@ public class IsConfiguredByImpl<Out extends Software, In extends ConfigurationTe
 		super();
 	}
 
+	public IsConfiguredByImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public IsConfiguredByImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsCorrelatedToImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsCorrelatedToImpl.java
index 95a3bfa..a991394 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsCorrelatedToImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsCorrelatedToImpl.java
@@ -22,6 +22,10 @@ public class IsCorrelatedToImpl<Out extends Dataset, In extends Dataset>
 		super();
 	}
 
+	public IsCorrelatedToImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public IsCorrelatedToImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsCustomizedByImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsCustomizedByImpl.java
index 3c10cb9..7e09e4b 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsCustomizedByImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsCustomizedByImpl.java
@@ -23,6 +23,10 @@ public class IsCustomizedByImpl<Out extends Service, In extends ConfigurationTem
 		super();
 	}
 
+	public IsCustomizedByImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public IsCustomizedByImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsDerivationOfImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsDerivationOfImpl.java
index 3162efd..ac38499 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsDerivationOfImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsDerivationOfImpl.java
@@ -23,6 +23,11 @@ public class IsDerivationOfImpl<Out extends Configuration, In extends Configurat
 		super();
 	}
 
+	public IsDerivationOfImpl(Out source, In target) {
+		super(source, target);
+	}
+
+	
 	public IsDerivationOfImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsOwnedByImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsOwnedByImpl.java
index fa34928..a0266b8 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsOwnedByImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsOwnedByImpl.java
@@ -23,6 +23,10 @@ public class IsOwnedByImpl<Out extends Site, In extends Actor> extends
 		super();
 	}
 
+	public IsOwnedByImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public IsOwnedByImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsPartOfImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsPartOfImpl.java
index 18d8792..9bd5cc8 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsPartOfImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsPartOfImpl.java
@@ -22,6 +22,10 @@ public class IsPartOfImpl<Out extends ConcreteDataset, In extends Dataset>
 		super();
 	}
 
+	public IsPartOfImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public IsPartOfImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsPluginOfImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsPluginOfImpl.java
index 431d5d3..15d7987 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsPluginOfImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/IsPluginOfImpl.java
@@ -22,6 +22,10 @@ public class IsPluginOfImpl<Out extends Plugin, In extends Software> extends Dep
 		super();
 	}
 	
+	public IsPluginOfImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public IsPluginOfImpl(Out source, In target, PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
 	}
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/ManagesImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/ManagesImpl.java
index 6987f3f..bae7152 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/ManagesImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/ManagesImpl.java
@@ -23,6 +23,10 @@ public class ManagesImpl<Out extends Service, In extends Dataset> extends
 		super();
 	}
 
+	public ManagesImpl(Out source, In target) {
+		super(source, target);
+	}
+
 	public ManagesImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/RequiresImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/RequiresImpl.java
index b182dec..090a9ea 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/RequiresImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/RequiresImpl.java
@@ -23,6 +23,10 @@ public class RequiresImpl<Out extends Software, In extends Service> extends
 		super();
 	}
 
+	public RequiresImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public RequiresImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);
diff --git a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/UsesImpl.java b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/UsesImpl.java
index b21efab..f14eb81 100644
--- a/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/UsesImpl.java
+++ b/src/main/java/org/gcube/resourcemanagement/model/impl/relations/isrelatedto/UsesImpl.java
@@ -21,6 +21,10 @@ public class UsesImpl<Out extends EService, In extends EService> extends
 		super();
 	}
 
+	public UsesImpl(Out source, In target) {
+		super(source, target);
+	}
+	
 	public UsesImpl(Out source, In target,
 			PropagationConstraint propagationConstraint) {
 		super(source, target, propagationConstraint);