private static boolean checkUnparsableReference(GrExpression expression) {
      final PsiElement parent = expression.getParent();
      if (parent instanceof GrAssignmentExpression assignmentExpression) {
        final IElementType operation = assignmentExpression.getOperationTokenType();
        if (assignmentExpression.getLValue() == expression && operation == GroovyTokenTypes.mPLUS_ASSIGN ) {
          return true;
        }
      }
      else if (parent instanceof GrBinaryExpression) {
        return true;
      }
      return false;

    }
private static boolean checkUnparsableReference(GrExpression expression)