docs: def _inspect_class(cls, subclass):
      """
      Args:
          cls(:py:class:`Plugin`): Parent class
          subclass(:py:class:`Plugin`): Subclass to evaluate
  
      Returns:
          Result: Named tuple
  
      Inspect subclass for inclusion
  
      Values for errorcode:
  
          * 0: No error
  
          Error codes between 0 and 100 are not intended for import
  
          * 50 Skipload flag is True
  
          Error codes between 99 and 200 are excluded from import
  
          * 156: Skipload call returned True
  
          Error codes 200 and above are malformed classes
  
          * 210: Missing abstract property
          * 211: Missing abstract static method
          * 212: Missing abstract class method
          * 213: Missing abstract method
          * 214: Missing abstract attribute
          * 220: Argument spec does not match
      """
  
      if callable(subclass._skipload_):
  
          result = subclass._skipload_()
  
          if isinstance(result, tuple):
              skip, msg = result
          else:
              skip, msg = result, None
  
          if skip:
              return Result(False, msg, 156)
  
      elif subclass._skipload_:
          return Result(False, 'Skipload flag is True', 50)
  
      return _check_methods(cls, subclass)