syntax_data: {"ast_node_type":"import","tokens":[{"end":92,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                     // Luckily, this is very easy to do because we already have that mapping
context_before:                     // of the RPITIT (which are represented by ReEarlyParam owned by the opaque).
context_after:                     // stored in the HIR of this RPITIT.