syntax_data: {"ast_node_type":"other","tokens":[{"end":47,"kind":"keyword","start":0,"text":"s.add_impl_generic(parse_quote!"}]}
source_snippet:         s.add_impl_generic(parse_quote! { I });
context_before:     if !s.ast().generics.type_params().any(|ty| ty.ident == "I") {
context_after:     }