function getNodeWithoutSource(...args) {
   const filterCallback = RelayConnectionInterface.EDGES_HAVE_SOURCE_FIELD ?
     () => true :
     node => !node.getSchemaName || node.getSchemaName() !== 'source';
   return filterRelayQuery(RelayTestUtils.getNode(...args), filterCallback);
 }
 function getQuery() {
   return RelayTestUtils.getNode(Relay.QL`query{node(id:"4"){id}}`);
 }