syntax_data: {"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"//!"}]}
source_snippet: //! in both domains). Indexed projections are the exception: `a[x]`
context_before: //! field-deref on a local variable, `x.field`, has the same meaning
context_after: //! needs to be treated as mapping to the same move path as `a[y]` as