Trait CreateTokenStream
rustc_ast::tokenstream
pub trait CreateTokenStream: Send + Sync + FnOnce() -> TokenStream { fn clone_it(&self) -> Box<dyn CreateTokenStream>; }
fn clone_it(&self) -> Box<dyn CreateTokenStream>
impl<F: 'static + Clone + Send + Sync + FnOnce() -> TokenStream> CreateTokenStream for F