optaplanner-core/src/main/java/org/optaplanner/core/impl/solver/termination/UnimprovedTimeMillisSpentScoreDifferenceThresholdTermination.java
@Override
    public UnimprovedTimeMillisSpentScoreDifferenceThresholdTermination createChildThreadTermination(
            DefaultSolverScope solverScope, ChildThreadType childThreadType) {
        return new UnimprovedTimeMillisSpentScoreDifferenceThresholdTermination(
                unimprovedTimeMillisSpentLimit, unimprovedScoreDifferenceThreshold);
    }
@Override
    public UnimprovedTimeMillisSpentScoreDifferenceThresholdTermination createChildThreadTermination(
            DefaultSolverScope solverScope, ChildThreadType childThreadType) {
        return new UnimprovedTimeMillisSpentScoreDifferenceThresholdTermination(
                unimprovedTimeMillisSpentLimit, unimprovedScoreDifferenceThreshold);
    }
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