| playable | The Playable used by this operation. |
| inputPort | The port index. |
Playable Playable connected at the index specified, or null if the index is valid but is not connected to anything. This happens if there was once a Playable connected at the index, but was disconnected via PlayableGraph.Disconnect.
Returns the Playable connected at the given input port index.
Use this templated extension method on any type that inherits from IPlayable.