public Builder setModel(java.lang.String value) {
      if (value == null) {
        throw new NullPointerException();
      }
      model_ = value;
      bitField0_ |= 0x00000004;
      onChanged();
      return this;
    }
<pre>
Only present when 'model' is present in the request.
'model' is normalized to have a project number.

For example:
If the 'model' field in TranslateDocumentRequest is:
`projects/{project-id}/locations/{location-id}/models/general/nmt` then
`model` here would be normalized to
`projects/{project-number}/locations/{location-id}/models/general/nmt`.
</pre>

<code>string model = 3;</code>

@param value The model to set.
@return This builder for chaining.
java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/TranslateDocumentResponse.java