@Override
 public long relationshipCreate(
     KernelStatement state, int relationshipTypeId, long startNodeId, long endNodeId)
     throws EntityNotFoundException {
   assertNodeExists(state, startNodeId);
   assertNodeExists(state, endNodeId);
   long id = storeLayer.reserveRelationship();
   state.txState().relationshipDoCreate(id, relationshipTypeId, startNodeId, endNodeId);
   return id;
 }