@Nullable
    private static PsiAssignmentExpression searchAssignmentExpression(@Nullable PsiElement anchor) {
      if (!(anchor instanceof PsiExpressionStatement statement)) return null;
      return ObjectUtils.tryCast(statement.getExpression(), PsiAssignmentExpression.class);
    }
@Nullable
    private static PsiAssignmentExpression searchAssignmentExpression(@Nullable PsiElement anchor)