GitHub user joeyfezster opened a pull request:
https://github.com/apache/beam/pull/3839
Add javadoc to ConsoleIO
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GitHub user joeyfezster opened a pull request:
https://github.com/apache/beam/pull/3780
KafkaIO readme
Following Beam's [Documentation
page](https://beam.apache.org/documentation/io/built-in/), (which you get to
from headder -> doccumentaton -> pipeline i/o ->
