How do I add headers for the output csv for apache beam dataflow?
<p>I noticed in the java sdk, there is a function that allows you to write the headers of a csv file. 
<a href="https://cloud.google.com/dataflow/java-sdk/JavaDoc/com/google/cloud/dataflow/sdk/io/TextIO.Write.html#withHeader-java.lang.String-" rel="nofollow">https://cloud.google.com/dataflow/java-sdk/JavaDoc/com/google/cloud/dataflow/sdk/io/TextIO.Write.html#withHeader-java.lang.String-</a></p>

<p>Is this features mirrored on the python skd? </p>

<p>This feature does not yet exist in the Python SDK</p>

python google-cloud-dataflow apache-beam