Unable to check files with escaping

[ifelsedeveloper]

Hello,
I like your utility, but we have one issue

Tailor Version: v0.12.0

Swift Version: 3.1

Platform (Mac/Linux/Windows/CI): Mac

Installation Method: Homebrew

Steps to Reproduce Issue

1. Create a test class with function
   private func getAvailableBoosts(completion: @escaping (Int) -> (), failure: @escaping (_ error: RequestError) -> ()) {}
2. Check this file by tailor
3. You will see message that it can't be parsed
4. change function name(remove "error") to
   private func getAvailableBoosts(completion: @escaping (Int) -> (), failure: @escaping (RequestError) -> ()) {}
5. check file again and it will be parsed successfully

Expected Behavior

Actual Behavior