Type org.eclipse.emf.common.util.EList<java.lang.Object> of variable dataValueDelegatingList does not match with type org.eclipse.emf.converter.ui.contribution.base.ModelConverterPage.PageDiagnosticHandler of variable pageDiagnosticHandler
Make classes org.eclipse.emf.common.util.EList and org.eclipse.emf.converter.ui.contribution.base.ModelConverterPage.PageDiagnosticHandler extend a common superclass
Type org.eclipse.emf.common.util.EList<java.lang.Object> of variable dataValueDelegatingList does not match with type org.eclipse.emf.converter.ui.contribution.base.ModelConverterPage.PageDiagnosticHandler of variable pageDiagnosticHandler