code: public java.util.List<String> getJobFlowStates() {
          if (jobFlowStates == null) {
              jobFlowStates = new com.amazonaws.internal.SdkInternalList<String>();
          }
          return jobFlowStates;
      }
docs: <p>
  Return only job flows whose state is contained in this list.
  </p>
  
  @return Return only job flows whose state is contained in this list.
  @see JobFlowExecutionState