returns the result of interpreting the object as an instance of ` association ' . this implementation returns null ; returning a non-null result will terminate the switch . concode_field_sep RelationshipsPackage modelPackage concode_field_sep T caseAssociationEnd concode_elem_sep T caseModelElement concode_elem_sep T caseFeature concode_elem_sep T caseStructuralFeature concode_elem_sep T caseGeneralization concode_elem_sep T doSwitch concode_elem_sep T doSwitch concode_elem_sep T doSwitch concode_elem_sep T caseElement concode_elem_sep T caseClass concode_elem_sep T caseClassifier concode_elem_sep T caseNamespace concode_elem_sep T defaultCase
T function ( Association arg0 ) { return null ; }