@java.lang.Override
    public Builder clear() {
      super.clear();
      bitField0_ = 0;
      boundingPoly_ = null;
      if (boundingPolyBuilder_ != null) {
        boundingPolyBuilder_.dispose();
        boundingPolyBuilder_ = null;
      }
      fdBoundingPoly_ = null;
      if (fdBoundingPolyBuilder_ != null) {
        fdBoundingPolyBuilder_.dispose();
        fdBoundingPolyBuilder_ = null;
      }
      if (landmarksBuilder_ == null) {
        landmarks_ = java.util.Collections.emptyList();
      } else {
        landmarks_ = null;
        landmarksBuilder_.clear();
      }
      bitField0_ = (bitField0_ & ~0x00000004);
      rollAngle_ = 0F;
      panAngle_ = 0F;
      tiltAngle_ = 0F;
      detectionConfidence_ = 0F;
      landmarkingConfidence_ = 0F;
      joyLikelihood_ = 0;
      sorrowLikelihood_ = 0;
      angerLikelihood_ = 0;
      surpriseLikelihood_ = 0;
      underExposedLikelihood_ = 0;
      blurredLikelihood_ = 0;
      headwearLikelihood_ = 0;
      return this;
    }
<pre>
A face annotation object contains the results of face detection.
</pre>

Protobuf type {@code google.cloud.vision.v1.FaceAnnotation}
java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/FaceAnnotation.java