jpa/eclipselink.jpa.test/resource/eclipselink-extensibility-model/repository/extension2.xml

<?xml version="1.0" encoding="UTF-8"?>
<entity-mappings version="2.3" xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/orm" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
          
    <description>Extension test</description>
    
    <package>org.eclipse.persistence.testing.models.jpa.extensibility</package>
    
    <entity name="ExtensibilityAddress" class="Address">
        <attributes>
            <basic name="appartmentNumber" access="VIRTUAL" attribute-type="java.lang.String">
                <column name="FLEX2"/>
                <access-methods get-method="get" set-method="set"/>
            </basic>
        </attributes>
    </entity>
</entity-mappings>