syntax_data: {"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"mcdc_info:"}]}
source_snippet:             mcdc_info: tcx.sess.instrument_coverage_mcdc().then(MCDCInfoBuilder::new),
context_before:             branch_info: tcx.sess.instrument_coverage_branch().then(BranchInfo::default),
context_after:         })