ru.asynchronizer:asynchronizer

"Provides a set of tools that aim to simplify development of asynchronous components, make their code easy-to-read and expressive, and clean the logic from technical details as much as possible. Contains a mechanism for defining the invocation context and passing it through the call tree, including asynchronous continuations; an interface for writing asynchronous algorithms in a declarative style (similar to async/await); batch processing; prioritized tasks, etc. See the project page for details."