validateIOS method

Implementation

void validateIOS() {
  const invalidMsg =
      'Invalid AudioContextConfig: On iOS it is not possible to set';
  const tip = 'Please create a custom [AudioContextIOS] if the generic flags '
      'cannot represent your needs.';
  assert(
    !(respectSilence && focus == AudioContextConfigFocus.duckOthers),
    '$invalidMsg `respectSilence` and `duckOthers`. $tip',
  );
  assert(
    !(respectSilence && focus == AudioContextConfigFocus.mixWithOthers),
    '$invalidMsg `respectSilence` and `mixWithOthers`. $tip',
  );
  assert(
    !(respectSilence && route == AudioContextConfigRoute.speaker),
    '$invalidMsg `respectSilence` and route `speaker`. $tip',
  );
}