code: @Override
    public FlowStatus get(ComplexResourceKey<FlowStatusId, EmptyRecord> key) {
      String flowGroup = key.getKey().getFlowGroup();
      String flowName = key.getKey().getFlowName();
      long flowExecutionId = key.getKey().getFlowExecutionId();
  
      LOG.info("Get called with flowGroup " + flowGroup + " flowName " + flowName + " flowExecutionId " + flowExecutionId);
  
      org.apache.gobblin.service.monitoring.FlowStatus flowStatus =
          _flowStatusGenerator.getFlowStatus(flowName, flowGroup, flowExecutionId);
  
      // this returns null to raise a 404 error if flowStatus is null
      return convertFlowStatus(flowStatus);
    }
docs: Retrieve the FlowStatus with the given key
  @param key flow status id key containing group name and flow name
  @return {@link FlowStatus} with flow status for the latest execution of the flow