code: public void setUnsuccessfulFleetRequests(java.util.Collection<CancelSpotFleetRequestsErrorItem> unsuccessfulFleetRequests) {
          if (unsuccessfulFleetRequests == null) {
              this.unsuccessfulFleetRequests = null;
              return;
          }
  
          this.unsuccessfulFleetRequests = new com.amazonaws.internal.SdkInternalList<CancelSpotFleetRequestsErrorItem>(unsuccessfulFleetRequests);
      }
docs: <p>
  Information about the Spot Fleet requests that are not successfully canceled.
  </p>
  
  @param unsuccessfulFleetRequests
  Information about the Spot Fleet requests that are not successfully canceled.