code: def get_resources_by_bins(self, bin_ids):
          
          # Implemented from template for
          # osid.resource.ResourceBinSession.get_resources_by_bins
          resource_list = []
          for bin_id in bin_ids:
              resource_list += list(
                  self.get_resources_by_bin(bin_id))
          return objects.ResourceList(resource_list)
docs: Gets the list of ``Resources`` corresponding to a list of ``Bins``.
  
          arg:    bin_ids (osid.id.IdList): list of bin ``Ids``
          return: (osid.resource.ResourceList) - list of resources
          raise:  NullArgument - ``bin_ids`` is ``null``
          raise:  OperationFailed - unable to complete request
          raise:  PermissionDenied - authorization failure
          *compliance: mandatory -- This method must be implemented.*