Braintree SDK porting to Dart language

I am looking for someone who could port the Braintree SDK, available as an open-source in various languages (C#, Java, NodeJS...) to Dart (2.3) language. The source code can be found on GitHub (e.g. for C#: [login to view URL], for Java: [login to view URL]). The objective of this porting is to have a fully operational Dart 2.3 library that could be used on a Dart Web Server. Acceptance criteria: the fully operational library + a sample that shows that everything works fine on the Braintree Sandbox (creation of a customer, transactions...)