syntax_data: {"ast_node_type":"other","tokens":[{"end":27,"kind":"keyword","start":0,"text":"#[cfg(feature"}]}
source_snippet: #[cfg(feature = "nightly")]
context_before: /// For early binders, you should first call `instantiate` before using any visitors.
context_after: impl<I: Interner, T> !TypeFoldable<I> for ty::EarlyBinder<I, T> {}