Crate async_sync_trait_procmacro 

This crate provides a macro (async_sync_trait) to define async traits (and their implementations) while automatically providing synchronous versions of each method named method_name_sync. See the macro’s docs for details.

Attribute Macros

async_sync_trait

This macro can be applied to traits and impls of those traits to automatically define _sync versions of async functions.

no_sync

Used to specify that a method inside of an async_sync_trait trait or impl should not produce a _sync version. Does not modify whatever it’s applied to.