https://beam.apache.org/releases/javadoc/current/org/apache/beam/sdk/io/UnboundedSource.UnboundedReader.html
UnboundedSource.UnboundedReader (Apache Beam 2.73.0)
declaration: package: org.apache.beam.sdk.io, class: UnboundedSource, class: UnboundedReader
apache beam
https://beam.apache.org/releases/javadoc/2.33.0/org/apache/beam/sdk/io/UnboundedSource.UnboundedReader.html
UnboundedSource.UnboundedReader (Apache Beam 2.33.0)
apache beam