syntax_data: {"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"&ty::PatternKind::Range"}]}
source_snippet:                 &ty::PatternKind::Range { start: start_a, end: end_a },
context_before:             (
context_after:                 &ty::PatternKind::Range { start: start_b, end: end_b },