code: public void setFaceMatches(java.util.Collection<FaceMatch> faceMatches) {
          if (faceMatches == null) {
              this.faceMatches = null;
              return;
          }
  
          this.faceMatches = new java.util.ArrayList<FaceMatch>(faceMatches);
      }
docs: <p>
  Information about the faces in the input collection that match the face of a person in the video.
  </p>
  
  @param faceMatches
  Information about the faces in the input collection that match the face of a person in the video.