optaplanner-core/src/main/java/org/optaplanner/core/config/solver/SolverConfig.java
public void offerRandomSeedFromSubSingleIndex(long subSingleIndex) {
        if (environmentMode == null || environmentMode.isReproducible()) {
            if (randomFactoryClass == null && randomSeed == null) {
                randomSeed = subSingleIndex;
            }
        }
    }
public void offerRandomSeedFromSubSingleIndex(long subSingleIndex) {
        if (environmentMode == null || environmentMode.isReproducible()) {
            if (randomFactoryClass == null && randomSeed == null) {
                randomSeed = subSingleIndex;
            }
        }
    }
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