title: How to make use of the Cython modules in Apache Beam?
body: <p>Beam has support for Cython, but there are no instructions how to make use of it in an application (<a href="https://beam.apache.org/get-started/quickstart-py/" rel="nofollow noreferrer">https://beam.apache.org/get-started/quickstart-py/</a>). Are there any extra dependencies that need to be installed?</p>