optaplanner-core/src/main/java/org/optaplanner/core/impl/localsearch/decider/acceptor/tabu/MoveTabuAcceptor.java
@Override
    protected Collection<? extends Object> findTabu(LocalSearchMoveScope moveScope) {
        return Collections.singletonList(moveScope.getMove());
    }
@Override
    protected Collection<? extends Object> findTabu(LocalSearchMoveScope moveScope) {
        return Collections.singletonList(moveScope.getMove());
    }
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