code: def get_assignable_bin_ids(self, bin_id):
          
          # Implemented from template for
          # osid.resource.ResourceBinAssignmentSession.get_assignable_bin_ids
          # This will likely be overridden by an authorization adapter
          mgr = self._get_provider_manager('RESOURCE', local=True)
          lookup_session = mgr.get_bin_lookup_session(proxy=self._proxy)
          bins = lookup_session.get_bins()
          id_list = []
          for bin in bins:
              id_list.append(bin.get_id())
          return IdList(id_list)
docs: Gets a list of bins including and under the given bin node in which any resource can be assigned.
  
          arg:    bin_id (osid.id.Id): the ``Id`` of the ``Bin``
          return: (osid.id.IdList) - list of assignable bin ``Ids``
          raise:  NullArgument - ``bin_id`` is ``null``
          raise:  OperationFailed - unable to complete request
          *compliance: mandatory -- This method must be implemented.*