graphs
Graph
nodes
edges
Node
outputs
inputs
Edge
<?xml version="1.0" encoding="UTF-8"?>
<ecore:EPackage xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:ecore="http://www.eclipse.org/emf/2002/Ecore" name="graphs" nsURI="http://Graphs/PLconcept" nsPrefix="gpl">
  <eAnnotations source="http://www.eclipse.org/OCL/Import">
    <details key="ecore" value="http://www.eclipse.org/emf/2002/Ecore"/>
  </eAnnotations>
  <eClassifiers xsi:type="ecore:EClass" name="Graph">
    <eOperations name="nodes" ordered="false" upperBound="-1" eType="#//Node">
      <eAnnotations source="presence">
        <details key="source" value="structure"/>
      </eAnnotations>
    </eOperations>
    <eOperations name="edges" ordered="false" upperBound="-1" eType="#//Edge">
      <eAnnotations source="presence">
        <details key="source" value="structure"/>
      </eAnnotations>
    </eOperations>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="Node">
    <eOperations name="outputs" ordered="false" upperBound="-1" eType="#//Node"/>
    <eOperations name="inputs" ordered="false" upperBound="-1" eType="#//Node"/>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="Edge"/>
</ecore:EPackage>

{"directed":true,"nodes":[{"nsPrefix":"gpl","nsURI":"http://Graphs/PLconcept","name":"graphs","id":0,"eClass":"EPackage"},{"instanceTypeName":null,"defaultValue":null,"instanceClassName":null,"name":"Graph","instanceClass":null,"abstract":false,"id":1,"interface":false,"eClass":"EClass"},{"instanceTypeName":null,"defaultValue":null,"instanceClassName":null,"name":"Node","instanceClass":null,"abstract":false,"id":2,"interface":false,"eClass":"EClass"},{"instanceTypeName":null,"defaultValue":null,"instanceClassName":null,"name":"Edge","instanceClass":null,"abstract":false,"id":3,"interface":false,"eClass":"EClass"},{"ordered":false,"upperBound":-1,"unique":true,"name":"nodes","lowerBound":0,"id":4,"many":true,"required":false,"eClass":"EOperation"},{"ordered":false,"upperBound":-1,"unique":true,"name":"edges","lowerBound":0,"id":5,"many":true,"required":false,"eClass":"EOperation"},{"id":6,"eClass":"EGenericType"},{"id":7,"eClass":"EGenericType"},{"ordered":false,"upperBound":-1,"unique":true,"name":"outputs","lowerBound":0,"id":8,"many":true,"required":false,"eClass":"EOperation"},{"ordered":false,"upperBound":-1,"unique":true,"name":"inputs","lowerBound":0,"id":9,"many":true,"required":false,"eClass":"EOperation"},{"id":10,"eClass":"EGenericType"},{"id":11,"eClass":"EGenericType"}],"links":[{"source":0,"target":1},{"source":0,"target":2},{"source":0,"target":3},{"source":1,"target":0},{"source":1,"target":4},{"source":1,"target":5},{"source":4,"target":2},{"source":4,"target":6},{"source":4,"target":1},{"source":6,"target":2},{"source":5,"target":3},{"source":5,"target":7},{"source":5,"target":1},{"source":7,"target":3},{"source":2,"target":0},{"source":2,"target":8},{"source":2,"target":9},{"source":8,"target":2},{"source":8,"target":10},{"source":8,"target":2},{"source":10,"target":2},{"source":9,"target":2},{"source":9,"target":11},{"source":9,"target":2},{"source":11,"target":2},{"source":3,"target":0}],"multigraph":true}