boolean (PsiAssignmentExpression expression) { final PsiExpression rExpression = expression.getRExpression(); final PsiElement parent = expression.getParent(); return RefactoringUtil.verifySafeCopyExpression(rExpression) == RefactoringUtil.EXPR_COPY_SAFE && parent instanceof PsiExpressionStatement && ((PsiExpressionStatement) parent).getExpression() == expression; }