@java.lang.Override
  public com.google.protobuf.Parser<FetchOptions> getParserForType() {
    return PARSER;
  }
<pre>
Custom headers to pass into fetch request.
Headers must have a maximum of 3 key value pairs.
Each key value pair must have a maximum of 256 characters per key and 256
characters per value.
</pre>

<code>map&lt;string, string&gt; headers = 1;</code>
java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/FetchOptions.java