syntax_data: {"ast_node_type":"variable","tokens":[{"end":35,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let source_len = src.len();
context_before:         let stable_id = StableSourceFileId::from_filename_in_current_crate(&name);
context_after:         let source_len = u32::try_from(source_len).map_err(|_| OffsetOverflowError)?;