docs: def create_objective(self, objective_form):
          """Creates a new ``Objective``.
  
          arg:    objective_form (osid.learning.ObjectiveForm): the form
                  for this ``Objective``
          return: (osid.learning.Objective) - the new ``Objective``
          raise:  IllegalState - ``objective_form`` already used in a
                  create transaction
          raise:  InvalidArgument - one or more of the form elements is
                  invalid
          raise:  NullArgument - ``objective_form`` is ``null``
          raise:  OperationFailed - unable to complete request
          raise:  PermissionDenied - authorization failure
          raise:  Unsupported - ``objective_form`` did not originate from
                  ``get_objective_form_for_create()``
          *compliance: mandatory -- This method must be implemented.*
  
          """
          # Implemented from template for
          # osid.resource.ResourceAdminSession.create_resource_template
          collection = JSONClientValidated('learning',
                                           collection='Objective',
                                           runtime=self._runtime)
          if not isinstance(objective_form, ABCObjectiveForm):
              raise errors.InvalidArgument('argument type is not an ObjectiveForm')
          if objective_form.is_for_update():
              raise errors.InvalidArgument('the ObjectiveForm is for update only, not create')
          try:
              if self._forms[objective_form.get_id().get_identifier()] == CREATED:
                  raise errors.IllegalState('objective_form already used in a create transaction')
          except KeyError:
              raise errors.Unsupported('objective_form did not originate from this session')
          if not objective_form.is_valid():
              raise errors.InvalidArgument('one or more of the form elements is invalid')
          insert_result = collection.insert_one(objective_form._my_map)
  
          self._forms[objective_form.get_id().get_identifier()] = CREATED
          result = objects.Objective(
              osid_object_map=collection.find_one({'_id': insert_result.inserted_id}),
              runtime=self._runtime,
              proxy=self._proxy)
  
          return result