syntax_data: {"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet:     pub variable_lookup_table: HashMap<I::GenericArg, usize>,
context_before:     pub variables: Vec<I::GenericArg>,
context_after:     pub var_kinds: Vec<CanonicalVarKind<I>>,