X-Git-Url: http://nitlanguage.org

diff --git a/src/model/model_base.nit b/src/model/model_base.nit
index a51ec29..ef17543 100644
--- a/src/model/model_base.nit
+++ b/src/model/model_base.nit
@@ -27,6 +27,16 @@ end
 abstract class MEntity
 	# The short (unqualified) name of this model entity
 	fun name: String is abstract
+
+	# A Model Entity has a direct link to its model
+	fun model: Model is abstract
+end
+
+# Something that represents a concern
+abstract class MConcern
+	super MEntity
+	# The concern that contains `self` or null if `self` is the root of the concern hierarchy
+	fun parent_concern: nullable MConcern is abstract
 end
 
 # A visibility (for modules, class and properties)