syntax_data: {"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"#[derive(Copy,"}]}
source_snippet: #[derive(Copy, Clone, Encodable, Decodable, Eq, PartialEq, Debug, HashStable_Generic)]
context_before: /// Identifies an offset of a character that was normalized away from `SourceFile`.
context_after: pub struct NormalizedPos {