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// Copyright 2020 TiKV Project Authors. Licensed under Apache-2.0. pub mod command_bus; pub mod spsc; #[doc(hidden)] pub mod tree; use std::borrow::Cow; use crate::local::raw_span::RawSpan; pub type RawSpans = Vec<RawSpan>; pub type Properties = Vec<(Cow<'static, str>, Cow<'static, str>)>;