syntax_data: {"ast_node_type":"other","tokens":[{"end":26,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet: pub const DUMMY_SP: Span =
context_before: /// The dummy span has zero position, length, and context, and no parent.
context_after:     Span { lo_or_index: 0, len_with_tag_or_marker: 0, ctxt_or_parent_or_marker: 0 };