syntax_data: {"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: /// are *absolute* positions from the beginning of the [`SourceMap`], not positions
context_before: /// Spans represent a region of code, used for error reporting. Positions in spans
context_after: /// relative to [`SourceFile`]s. Methods on the `SourceMap` can be used to relate spans back