Macro hyper_static_server::route_extensions_insert

macro_rules! route_extensions_insert {
    ( $_extensions : ident, () ) => { ... };
    ( $_extensions : ident, {} ) => { ... };
    ( $_extensions : ident, { $_key : ident $( , $( $_rest : tt )+ )* } ) => { ... };
    ( $_extensions : ident, { $_key : ident : $_value : tt $( , $( $_rest : tt )+ )* } ) => { ... };
}