Example library EMF model

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<?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="library"
    nsURI="http://www.eclipse.org/emf/jcrm/samples/emf/sample/Library" nsPrefix="library">
  <eClassifiers xsi:type="ecore:EClass" name="Book">
    <eAnnotations source="http:///org/eclipse/emf/ecore/util/ExtendedMetaData">
      <details key="name" value="Book"/>
      <details key="kind" value="elementOnly"/>
    </eAnnotations>
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="title" unique="false" lowerBound="1"
        eType="ecore:EDataType http://www.eclipse.org/emf/2003/XMLType#//String">
      <eAnnotations source="http:///org/eclipse/emf/ecore/util/ExtendedMetaData">
        <details key="kind" value="element"/>
        <details key="name" value="title"/>
      </eAnnotations>
    </eStructuralFeatures>
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="pages" unique="false" lowerBound="1"
        eType="ecore:EDataType http://www.eclipse.org/emf/2003/XMLType#//Int" unsettable="true">
      <eAnnotations source="http:///org/eclipse/emf/ecore/util/ExtendedMetaData">
        <details key="kind" value="element"/>
        <details key="name" value="pages"/>
      </eAnnotations>
    </eStructuralFeatures>
    <eStructuralFeatures xsi:type="ecore:EReference" name="author" lowerBound="1"
        eType="#//Writer">
      <eAnnotations source="http:///org/eclipse/emf/ecore/util/ExtendedMetaData">
        <details key="kind" value="element"/>
        <details key="name" value="author"/>
      </eAnnotations>
    </eStructuralFeatures>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="Library">
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="name" unique="false" lowerBound="1"
        eType="ecore:EDataType http://www.eclipse.org/emf/2003/XMLType#//String">
      <eAnnotations source="http:///org/eclipse/emf/ecore/util/ExtendedMetaData">
        <details key="kind" value="element"/>
        <details key="name" value="name"/>
      </eAnnotations>
    </eStructuralFeatures>
    <eStructuralFeatures xsi:type="ecore:EReference" name="books" upperBound="-1"
        eType="#//Book" containment="true">
      <eAnnotations source="http:///org/eclipse/emf/ecore/util/ExtendedMetaData">
        <details key="kind" value="element"/>
        <details key="name" value="books"/>
      </eAnnotations>
    </eStructuralFeatures>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="Writer">
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="name" unique="false" lowerBound="1"
        eType="ecore:EDataType http://www.eclipse.org/emf/2003/XMLType#//String">
      <eAnnotations source="http:///org/eclipse/emf/ecore/util/ExtendedMetaData">
        <details key="kind" value="element"/>
        <details key="name" value="name"/>
      </eAnnotations>
    </eStructuralFeatures>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="GuideBookWriter" eSuperTypes="#//Writer">
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="countries" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
  </eClassifiers>
  <eClassifiers xsi:type="ecore:EClass" name="SpecialistBookWriter" eSuperTypes="#//Writer">
    <eStructuralFeatures xsi:type="ecore:EAttribute" name="subject" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
  </eClassifiers>
  </ecore:EPackage>