syntax_data: {"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                 // (Does nothing if condition coverage is not enabled.)
context_before:                 // Instrument the lowered RHS's value for condition coverage.
context_after:                 this.visit_coverage_standalone_condition(rhs, destination, &mut rhs_block);