syntax_data: {"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"Some(SimplifiedType::Trait(principal_def_id))"}]}
source_snippet:                 Some(SimplifiedType::Trait(principal_def_id))
context_before:             Some(principal_def_id) if !cx.trait_is_auto(principal_def_id) => {
context_after:             }