Function AudioServerSingleton.getBusEffectInstance

Returns the AudioEffectInstance assigned to the given bus and effect indices (and optionally channel).

godot.d.reference.Ref!(godot.audioeffectinstance.AudioEffectInstance) getBusEffectInstance (
  const(long) bus_idx,
  const(long) effect_idx,
  const(long) channel = 0L
) nothrow @nogc;