{"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"//"}]}
    // expressions from coverage spans in enclosing MIR's, like we do for closures. (That might
    // expressions get coverage spans, we will probably have to "carve out" space for const
    // be tricky if const expressions have no corresponding statements in the enclosing MIR.