syntax_data: {"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"cg:"}]}
source_snippet:         cg: CodegenOptions [SUBSTRUCT CodegenOptionsTargetModifiers CodegenOptions],
context_before:         prints: Vec<PrintRequest> [UNTRACKED],
context_after:         externs: Externs [UNTRACKED],