syntax_data: {"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"ty::GenericArgKind::Type(ty1)"}]}
source_snippet:             ty::GenericArgKind::Type(ty1) => {
context_before:             // generic coroutine with a more specific type.
context_after:                 let mut components = smallvec![];