def METHOD_NAME(self, container, representation):
    node = container['objectName']
    assert cmds.objExists(node), "Missing container"
    members = cmds.sets(node, query=True) or []
    rs_meshes = cmds.ls(members, type="RedshiftProxyMesh")
    assert rs_meshes, "Cannot find RedshiftProxyMesh in container"
    filename = get_representation_path(representation)
    for rs_mesh in rs_meshes:
        cmds.setAttr("{}.fileName".format(rs_mesh),
                     filename,
                     type="string")
    # Update metadata
    cmds.setAttr("{}.representation".format(node),
                 str(representation["_id"]),
                 type="string")