@Nullable
  public static PsiExpression getValueComparedWithNull(@NotNull PsiBinaryExpression binOp) {
    final IElementType tokenType = binOp.getOperationTokenType();
    if(!tokenType.equals(JavaTokenType.EQEQ) && !tokenType.equals(JavaTokenType.NE)) return null;
    final PsiExpression left = binOp.getLOperand();
    final PsiExpression right = binOp.getROperand();
    if(isNullLiteral(right)) return left;
    if(isNullLiteral(left)) return right;
    return null;
  }
@Nullable
  public static PsiExpression getValueComparedWithNull(@NotNull PsiBinaryExpression binOp)