@abc.abstractmethod<EOL><INDENT>def delete_commitment(self, commitment_id):<DEDENT>
pass<EOL>
Deletes the ``Commitment`` identified by the given ``Id``.

        :param commitment_id: the ``Id`` of the ``Commitment`` to delete
        :type commitment_id: ``osid.id.Id``
        :raise: ``NotFound`` -- a ``Commitment`` was not found identified by the given ``Id``
        :raise: ``NullArgument`` -- ``commitment_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

        *compliance: mandatory -- This method must be implemented.*