Midi Note Selection Region
data class MidiNoteSelectionRegion(val clipId: ProjectObjectId, val startTick: Long, val endTick: Long, val pitches: IntRange? = null, val group: Int? = null, val channel: Int? = null) : SelectionRegion
MidiNoteSelectionRegion: a half-open tick range of a clip's content. pitches includes both ends. A null constraint is absent.