syntax_data: {"ast_node_type":"function","tokens":[{"end":64,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
context_before: impl fmt::Debug for Init {
context_after:         write!(fmt, "{:?}@{:?} ({:?})", self.path, self.location, self.kind)