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

    size = 0;
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(nfVendor_)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, nfVendor_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(nfType_)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, nfType_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(nfVersion_)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, nfVersion_);
    }
    size += getUnknownFields().getSerializedSize();
    memoizedSize = size;
    return size;
  }
<pre>
Output only. NF version.
</pre>

<code>string nf_version = 3 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>

@return The bytes for nfVersion.
java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/SiteVersion.java