public Builder mergeFrom(com.google.cloud.vision.v1p1beta1.ImageSource other) {
      if (other == com.google.cloud.vision.v1p1beta1.ImageSource.getDefaultInstance()) return this;
      if (!other.getGcsImageUri().isEmpty()) {
        gcsImageUri_ = other.gcsImageUri_;
        bitField0_ |= 0x00000001;
        onChanged();
      }
      if (!other.getImageUri().isEmpty()) {
        imageUri_ = other.imageUri_;
        bitField0_ |= 0x00000002;
        onChanged();
      }
      this.mergeUnknownFields(other.getUnknownFields());
      onChanged();
      return this;
    }
<pre>
External image source (Google Cloud Storage image location).
</pre>

Protobuf type {@code google.cloud.vision.v1p1beta1.ImageSource}
java-vision/proto-google-cloud-vision-v1p1beta1/src/main/java/com/google/cloud/vision/v1p1beta1/ImageSource.java