code: def _generate_annotation_type_class(self, ns, annotation_type):
          # type: (ApiNamespace, AnnotationType) -> None
          
          self.emit('class {}(bb.AnnotationType):'.format(
              class_name_for_annotation_type(annotation_type, ns)))
          with self.indent():
              if annotation_type.has_documented_type_or_params():
                  self.emit('"""')
                  if annotation_type.doc:
                      self.emit_wrapped_text(
                          self.process_doc(annotation_type.doc, self._docf))
                      if annotation_type.has_documented_params():
                          self.emit()
                  for param in annotation_type.params:
                      if not param.doc:
                          continue
                      self.emit_wrapped_text(':ivar {}: {}'.format(
                          fmt_var(param.name, True),
                          self.process_doc(param.doc, self._docf)),
                          subsequent_prefix='    ')
                  self.emit('"""')
              self.emit()
  
              self._generate_annotation_type_class_slots(annotation_type)
              self._generate_annotation_type_class_init(ns, annotation_type)
              self._generate_annotation_type_class_properties(ns, annotation_type)
              self.emit()
docs: Defines a Python class that represents an annotation type in Stone.