History of ReferenceIndex::clear 1 change

In src/references.ts, lines 40–42 on bd69712343d2b4ea70d271e37f05ca5701172a5f1648eb8556c8a4b8a6a9512e. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 40,42:src/references.ts.