public void setNumberReferenceFrames(Integer numberReferenceFrames) {
        this.numberReferenceFrames = numberReferenceFrames;
    }
Number of reference frames to use. The encoder may use more than requested if using B-frames and/or interlaced
encoding.

@param numberReferenceFrames
       Number of reference frames to use. The encoder may use more than requested if using B-frames and/or
       interlaced encoding.
aws-java-sdk-mediaconvert/src/main/java/com/amazonaws/services/mediaconvert/model/H264Settings.java