Macro impl_plugin_payload 

macro_rules! impl_plugin_payload {
    ($ty:ty) => { ... };
}

Implements PluginPayload for a type that is Clone + Send + Sync + 'static.

Saves boilerplate — instead of writing the three methods manually, just invoke this macro:

use cpex_core::impl_plugin_payload;

#[derive(Debug, Clone)]
struct MyPayload { value: i32 }

impl_plugin_payload!(MyPayload);