expression = editor.replaceExpression(expression, contentSource);
columnData.getCreationSupport().add_setSourceExpression(expression);
columnData.addRelatedNode(expression);
}
// set Association
columnData.setAssociation(new InvocationSecondaryAssociation(invocation));
editor.replaceInvocationBinding(invocation);
// set VariableSupport
VariableSupport variableSupport = new EmptyVariableSupport(columnData, expression);
columnData.setVariableSupport(variableSupport);
// add content ColumnLayoutData as child