{"ast_node_type":"other","tokens":[{"end":92,"kind":"keyword","start":0,"text":"//!"}]}
//! real, runtime versions of these mocked-up objects have constraints (such as cross-thread
//! `Terminator`s of various `kind`s, and `Span` objects. Some functions used by or used on
//! limitations) and deep dependencies on other elements of the full Rust compiler (which is