syntax_data: {"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"//!"}]}
source_snippet: //! structures into the THIR. The `builder` is generally ignorant of the tcx,
context_before: //! This module contains the functionality to convert from the wacky tcx data
context_after: //! etc., and instead goes through the `Cx` for most of its work.