syntax_data: {"ast_node_type":"other","tokens":[{"end":30,"kind":"keyword","start":0,"text":"PassMode::Pair(..)"}]}
source_snippet:             PassMode::Pair(..)
context_before:             PassMode::Direct(ref mut attrs) => attrs,
context_after:             | PassMode::Indirect { attrs: _, meta_attrs: Some(_), on_stack: _ }