syntax_data: {"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"SourceFileLines::Diffs(SourceFileDiffs"}]}
source_snippet:                 SourceFileLines::Diffs(SourceFileDiffs { bytes_per_diff, num_diffs, raw_diffs })
context_before:                 let raw_diffs = d.read_raw_bytes(bytes_per_diff * num_diffs).to_vec();
context_after:             } else {