syntax_data: {"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"//!"}]}
source_snippet: //! [`SpanMarker`]: rustc_middle::mir::coverage::CoverageKind::SpanMarker
context_before: //! [`BlockMarker`]: rustc_middle::mir::coverage::CoverageKind::BlockMarker