fn extract_branch_mappings(
mir_body: &Body<'_>,
hir_info: &ExtractedHirInfo,
graph: &CoverageGraph,
expn_tree: &ExpnTree,
mappings: &mut Vec<Mapping>,
)fn extract_branch_mappings(
mir_body: &Body<'_>,
hir_info: &ExtractedHirInfo,
graph: &CoverageGraph,
expn_tree: &ExpnTree,
mappings: &mut Vec<Mapping>,
)