code: def defaultset(self, annotationtype):
          
  
          if inspect.isclass(annotationtype) or isinstance(annotationtype,AbstractElement): annotationtype = annotationtype.ANNOTATIONTYPE
          try:
              return list(self.annotationdefaults[annotationtype].keys())[0]
          except KeyError:
              raise NoDefaultError
          except IndexError:
              raise NoDefaultError
docs: Obtain the default set for the specified annotation type.
  
          Arguments:
              annotationtype: The type of annotation, this is conveyed by passing the corresponding annototion class (such as :class:`PosAnnotation` for example), or a member of :class:`AnnotationType`, such as ``AnnotationType.POS``.
  
          Returns:
              the set (str)
  
          Raises:
              :class:`NoDefaultError` if the annotation type does not exist or if there is ambiguity (multiple sets for the same type)