{"ast_node_type":"function","tokens":[{"end":66,"kind":"keyword","start":0,"text":"//!"}]}
//! itself). Note that this implies that `fn edges(&'a self)` must
//! internal vector (rather than passing around a copy of the pair
//! construct a fresh `Vec<&'a (usize,usize)>` from the `Vec<(usize,usize)>`