/// Macro to wrap a code that will be built if async mode is enabled.
#[macro_export]macro_rules!async_mode_enabled{($($item:item)*)=>{$(#[cfg(feature ="async_mode")]$item)*}}/// Macro to wrap a code that will be built if async mode is disabled.
#[macro_export]macro_rules!async_mode_disabled{($($item:item)*)=>{$(#[cfg(not(feature ="async_mode"))]$item)*}}