Function rinecs_derive_utils::system::impl_any_system_fn

pub fn impl_any_system_fn(
    args: &AttributeArgs, 
    func: &ItemFn, 
    system_type: SystemType, 
    system_trait: TokenStream, 
    trait_fn_name: TokenStream, 
    extra_methods: TokenStream, 
    generics_in: GenericsIn, 
    resources_ty: SystemResourcesTy
) -> TokenStream