{"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"///"}]}
/// default implementation (i.e. when it does not actually enter the span but instead returns `()`).
/// This is supposed to be compiled out when [crate::interpret::Machine::enter_trace_span] has the
/// This macro takes a type implementing the [crate::interpret::Machine] trait as its first argument