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use proc_macro;
use quote::quote;
use syn;

pub(crate) fn state_data(ast: &syn::DeriveInput) -> proc_macro::TokenStream {
    let name = &ast.ident;
    let (impl_generics, ty_generics, where_clause) = ast.generics.split_for_impl();

    let expanded = quote! {
        impl #impl_generics ::gotham::state::StateData for #name #ty_generics #where_clause {}
    };

    expanded.into()
}