syntax_data: {"ast_node_type":"variable","tokens":[{"end":49,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:             let prefix = modifier.unwrap_or('z');
context_before:         } else if self as u32 <= Self::zmm31 as u32 {
context_after:             let index = self as u32 - Self::zmm0 as u32;