@abc.abstractmethod<EOL><INDENT>def get_bin_form_for_update(self, bin_id):<DEDENT>
return<EOL>
Gets the bin form for updating an existing bin.

        A new bin form should be requested for each update transaction.

        :param bin_id: the ``Id`` of the ``Bin``
        :type bin_id: ``osid.id.Id``
        :return: the bin form
        :rtype: ``osid.resource.BinForm``
        :raise: ``NotFound`` -- ``bin_id`` is not found
        :raise: ``NullArgument`` -- ``bin_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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