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Future utilities and runtime-agnostic abstractions for smithy-rs.

Async runtime specific code is abstracted behind async traits, and implementations are provided via feature flag. For now, only Tokio runtime implementations are provided.


Useful runtime-agnostic future implementations.

Async runtime agnostic traits and implementations.


Given an Instant and a Duration, assert time elapsed since Instant is equal to Duration. This macro allows for a 5ms margin of error.