@java.lang.Override
  public int getSerializedSize() {
    int size = memoizedSize;
    if (size != -1) return size;

    size = 0;
    if (java.lang.Double.doubleToRawLongBits(baselineOutputValue_) != 0) {
      size += com.google.protobuf.CodedOutputStream.computeDoubleSize(1, baselineOutputValue_);
    }
    if (java.lang.Double.doubleToRawLongBits(instanceOutputValue_) != 0) {
      size += com.google.protobuf.CodedOutputStream.computeDoubleSize(2, instanceOutputValue_);
    }
    if (((bitField0_ & 0x00000001) != 0)) {
      size += com.google.protobuf.CodedOutputStream.computeMessageSize(3, getFeatureAttributions());
    }
    {
      int dataSize = 0;
      for (int i = 0; i < outputIndex_.size(); i++) {
        dataSize +=
            com.google.protobuf.CodedOutputStream.computeInt32SizeNoTag(outputIndex_.getInt(i));
      }
      size += dataSize;
      if (!getOutputIndexList().isEmpty()) {
        size += 1;
        size += com.google.protobuf.CodedOutputStream.computeInt32SizeNoTag(dataSize);
      }
      outputIndexMemoizedSerializedSize = dataSize;
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(outputDisplayName_)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(5, outputDisplayName_);
    }
    if (java.lang.Double.doubleToRawLongBits(approximationError_) != 0) {
      size += com.google.protobuf.CodedOutputStream.computeDoubleSize(6, approximationError_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(outputName_)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(7, outputName_);
    }
    size += getUnknownFields().getSerializedSize();
    memoizedSize = size;
    return size;
  }
<pre>
Output only. Name of the explain output. Specified as the key in
[ExplanationMetadata.outputs][google.cloud.aiplatform.v1.ExplanationMetadata.outputs].
</pre>

<code>string output_name = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>

@return The bytes for outputName.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/Attribution.java