syntax_data: {"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"&v.file_name_str[prefix.len()..v.file_name_str.len()"}]}
source_snippet:                         &v.file_name_str[prefix.len()..v.file_name_str.len() - suffix.len()],
context_before:                     String::from(
context_after:                     ),