public Builder mergeFrom(com.google.cloud.visionai.v1.UserSpecifiedAnnotation other) {
      if (other == com.google.cloud.visionai.v1.UserSpecifiedAnnotation.getDefaultInstance())
        return this;
      if (!other.getKey().isEmpty()) {
        key_ = other.key_;
        bitField0_ |= 0x00000001;
        onChanged();
      }
      if (other.hasValue()) {
        mergeValue(other.getValue());
      }
      if (other.hasPartition()) {
        mergePartition(other.getPartition());
      }
      this.mergeUnknownFields(other.getUnknownFields());
      onChanged();
      return this;
    }
<pre>
Annotation provided by users.
</pre>

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