syntax_data: {"ast_node_type":"function","tokens":[{"end":65,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn print(t: &T, fmt: &mut fmt::Formatter<'_>) -> fmt::Result;
context_before: pub trait IrPrint<T> {
context_after:     fn print_debug(t: &T, fmt: &mut fmt::Formatter<'_>) -> fmt::Result;