code: public static function isValidColumnName($strColName)
      {
          return self::isValidMySQLIdentifier($strColName)
                 && !self::isReservedWord($strColName)
                 && !self::isReserveColumnPostFix($strColName);
      }
docs: Checks whether the column with the given name is a MetaModel system column.
  
  @param string $strColName The name of the column.
  
  @return bool true if the column is a system column, false otherwise.