code: private boolean isKeyword(String token)
      {
          // Compare the passed token against the provided keyword list, or their
          // lowercase form
          for (int i = 0; i < KunderaQuery.SINGLE_STRING_KEYWORDS.length; i++)
          {
              if (token.equalsIgnoreCase(KunderaQuery.SINGLE_STRING_KEYWORDS[i]))
              {
                  return true;
              }
          }
          return false;
      }
docs: Method to detect whether this token is a keyword for JPQL Single-String.
  
  @param token
  The token
  
  @return Whether it is a keyword