public Builder mergeFrom(com.google.cloud.vision.v1.BoundingPoly other) {
      if (other == com.google.cloud.vision.v1.BoundingPoly.getDefaultInstance()) return this;
      if (verticesBuilder_ == null) {
        if (!other.vertices_.isEmpty()) {
          if (vertices_.isEmpty()) {
            vertices_ = other.vertices_;
            bitField0_ = (bitField0_ & ~0x00000001);
          } else {
            ensureVerticesIsMutable();
            vertices_.addAll(other.vertices_);
          }
          onChanged();
        }
      } else {
        if (!other.vertices_.isEmpty()) {
          if (verticesBuilder_.isEmpty()) {
            verticesBuilder_.dispose();
            verticesBuilder_ = null;
            vertices_ = other.vertices_;
            bitField0_ = (bitField0_ & ~0x00000001);
            verticesBuilder_ =
                com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders
                    ? getVerticesFieldBuilder()
                    : null;
          } else {
            verticesBuilder_.addAllMessages(other.vertices_);
          }
        }
      }
      if (normalizedVerticesBuilder_ == null) {
        if (!other.normalizedVertices_.isEmpty()) {
          if (normalizedVertices_.isEmpty()) {
            normalizedVertices_ = other.normalizedVertices_;
            bitField0_ = (bitField0_ & ~0x00000002);
          } else {
            ensureNormalizedVerticesIsMutable();
            normalizedVertices_.addAll(other.normalizedVertices_);
          }
          onChanged();
        }
      } else {
        if (!other.normalizedVertices_.isEmpty()) {
          if (normalizedVerticesBuilder_.isEmpty()) {
            normalizedVerticesBuilder_.dispose();
            normalizedVerticesBuilder_ = null;
            normalizedVertices_ = other.normalizedVertices_;
            bitField0_ = (bitField0_ & ~0x00000002);
            normalizedVerticesBuilder_ =
                com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders
                    ? getNormalizedVerticesFieldBuilder()
                    : null;
          } else {
            normalizedVerticesBuilder_.addAllMessages(other.normalizedVertices_);
          }
        }
      }
      this.mergeUnknownFields(other.getUnknownFields());
      onChanged();
      return this;
    }
<pre>
A bounding polygon for the detected image annotation.
</pre>

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