sinceSdkVersion property

  1. @override
Version? sinceSdkVersion

The version where this SDK API was added.

A @Since() annotation can be applied to a library declaration, any public declaration in a library, or in a class, or to an optional parameter, etc.

The returned version is "effective", so that if a library is annotated then all elements of the library inherit it; or if a class is annotated then all members and constructors of the class inherit it.

If multiple @Since() annotations apply to the same element, the latest version takes precedence.

Returns null if the element is not declared in SDK, or does not have a @Since() annotation applicable to it.


Version? get sinceSdkVersion {
  if (!hasModifier(Modifier.HAS_SINCE_SDK_VERSION_COMPUTED)) {
    setModifier(Modifier.HAS_SINCE_SDK_VERSION_COMPUTED, true);
    var result = SinceSdkVersionComputer().compute(this);
    if (result != null) {
      _sinceSdkVersion[this] = result;
      setModifier(Modifier.HAS_SINCE_SDK_VERSION_VALUE, true);
  if (hasModifier(Modifier.HAS_SINCE_SDK_VERSION_VALUE)) {
    return _sinceSdkVersion[this];
  return null;