https://beam.apache.org/releases/javadoc/2.33.0/org/apache/beam/sdk/transforms/windowing/Window.ClosingBehavior.html
Window.ClosingBehavior (Apache Beam 2.33.0)
apache beamwindow
https://beam.apache.org/releases/javadoc/2.22.0/org/apache/beam/sdk/transforms/windowing/Window.ClosingBehavior.html
Window.ClosingBehavior (Apache Beam 2.22.0)
apache beamwindow