Suggest: support a function that can get the determined service from `Alldid` class

[cl510804194]

When i want to use reverse function , I found that this is a not support method in alldid,So i want to get ensSerive, I just find getServiceOrThrow function to get the service that i need, May it support directly selecting a specific service that I want?

[tianxiemaochiyu]

Thank you for your feature request. Due to the generality of reverse parsing, the current Reverse function is not very well implemented. We can consider exposing each individual service for use, which will be integrated into future versions.