finish
Signal that the caller is done recording. This invalidates the canvas returned by .beginRecording/.getRecordingCanvas.
The returned picture is immutable. If during recording drawables were added to the canvas, these will have been "drawn" into a recording canvas, so that this resulting picture will reflect their current state, but will not contain a live reference to the drawables themselves.
Signal that the caller is done recording, and update the cull rect to use for bounding box hierarchy (BBH) generation. The behavior is the same as calling .finishRecordingAsPicture, except that this method updates the cull rect initially passed into .beginRecording.
Return
the picture containing the recorded content.
Parameters
the new culling rectangle to use as the overall bound for BBH generation and subsequent culling operations.