syntax_data: {"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"//!"}]}
source_snippet: //! allows bidirectional lookup; i.e., given a value, one can easily find the
context_before: //! An "interner" is a data structure that associates values with usize tags and
context_after: //! type, and vice versa.