syntax_data: {"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// after the current enclosing `ExprKind::Scope` has ended, so
context_before:     /// The operand returned from this function will *not be valid*
context_after:     /// please do *not* return it from functions to avoid bad