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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def unassign_objective_from_objective_bank(self, objective_id, objective_bank_id):
 """Removes an ``Objective`` from an ``ObjectiveBank``. arg: objective_id (osid.id.Id):
 the ``Id`` of the ``Objective`` arg: objective_bank_id (osid.id.Id):
 the ``Id`` of the ``ObjectiveBank`` raise: NotFound - ``objective_id`` or ``objective_bank_id`` not found or ``objective_id`` not mapped to ``objective_bank_id`` raise: NullArgument - ``objective_id`` or ``objective_bank_id`` is ``null`` raise: OperationFailed - unable to complete request raise: PermissionDenied - authorization failure *compliance: mandatory -- This method must be implemented.* """

        # Implemented from template for
        # osid.resource.ResourceBinAssignmentSession.unassign_resource_from_bin
        mgr = self._get_provider_manager('LEARNING', local=True)
        lookup_session = mgr.get_objective_bank_lookup_session(proxy=self._proxy)
        lookup_session.get_objective_bank(objective_bank_id)  # to raise NotFound
        self._unassign_object_from_catalog(objective_id, objective_bank_id)