答案是否定的，目前尚无办法公开.

The answer is no, there is currently no way to expose that.

然而，它正被考虑用于Swift 3.0(请参阅提案

It is however, being considered for Swift 3.0 (see the proposal here)

这是不正确的，正如Adam S指出的.

This is incorrect as pointed out by Adam S.