@Override
                                             public void pass(final ElementToWorkOn elementToWorkOn) {
                                               if (elementToWorkOn == null) {
                                                 return;
                                               }

                                               if (elementToWorkOn.getLocalVariable() == null && elementToWorkOn.getExpression() == null) {
                                                 if (!introduceStrategy(project, editor, file)) {
                                                   ElementToWorkOn.showNothingSelectedErrorMessage(editor, getRefactoringName(),
                                                                                                   HelpID.INTRODUCE_PARAMETER, project);
                                                 }
                                                 return;
                                               }

                                               final PsiExpression expr = elementToWorkOn.getExpression();
                                               final PsiLocalVariable localVar = elementToWorkOn.getLocalVariable();
                                               final boolean isInvokedOnDeclaration = elementToWorkOn.isInvokedOnDeclaration();

                                               invoke(editor, project, expr, localVar, isInvokedOnDeclaration);
                                             }
@Override
                                             public void pass(final ElementToWorkOn elementToWorkOn)