syntax_data: {"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"self.tcx().sess.source_map().span_to_string(span,"}]}
source_snippet:                                 self.tcx().sess.source_map().span_to_string(span, preference)
context_before:                                 // into MIR. Hence we use the remapped path if available
context_after:                             )?;