Attribute Macro query 

#[query]

An attribute on a function that creates an associated struct that implements the Hipcheck Rust SDK’s Query trait. The function must have the signature fn(&mut PluginEngine, content: impl serde::Deserialize) -> hipcheck_sdk::Result<impl serde::Serialize>. The generated struct’s name is the pascal-case version of the function name (e.g. do_something() -> DoSomething).