syntax_data: {"ast_node_type":"other","tokens":[{"end":30,"kind":"keyword","start":0,"text":"Self::preg"}]}
source_snippet:             Self::preg => &[],
context_before:             Self::vreg | Self::vreg_low16 => &['b', 'h', 's', 'd', 'q', 'v'],
context_after:         }