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These are the API packages. See all API classes. Support android.transition classes to provide transition API back to Android API level 14.

Support classes for building Leanback user experiences.

Support classes providing high level Leanback user interface building blocks.

Support classes providing low level Leanback user interface building blocks: widgets and helpers.

Contains APIs that control the routing of media channels and streams from the current device to external speakers and destination devices.
androidx.recyclerview.selection A RecyclerView addon library providing support for item selection.
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