code: public void setEmotions(java.util.Collection<Emotion> emotions) {
          if (emotions == null) {
              this.emotions = null;
              return;
          }
  
          this.emotions = new java.util.ArrayList<Emotion>(emotions);
      }
docs: <p>
  The emotions detected on the face, and the confidence level in the determination. For example, HAPPY, SAD, and
  ANGRY.
  </p>
  
  @param emotions
  The emotions detected on the face, and the confidence level in the determination. For example, HAPPY, SAD,
  and ANGRY.