syntax_data: {"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"\"emit"}]}
source_snippet:         "emit noalias metadata for box (default: yes)"),
context_before:     box_noalias: bool = (true, parse_bool, [TRACKED],
context_after:     branch_protection: Option<BranchProtection> = (None, parse_branch_protection, [TRACKED],