syntax_data: {"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: /// - `span.ctxt_or_parent_or_marker == CTXT_INTERNED_MARKER`
context_before: /// - `span.len_with_tag_or_marker == BASE_LEN_INTERNED_MARKER`
context_after: ///