syntax_data: {"ast_node_type":"other","tokens":[{"end":41,"kind":"keyword","start":0,"text":"pub(crate)"}]}
source_snippet:     pub(crate) binding_mode_count: usize,
context_before:     pub(crate) ref_pattern_count: usize,
context_after:     /// Labels for where incompatibility-causing by-ref default binding modes were introduced.