optaplanner-core/src/main/java/org/optaplanner/core/config/solver/SolverConfig.java
public EnvironmentMode determineEnvironmentMode() {
        if (environmentMode == EnvironmentMode.PRODUCTION) {
            environmentMode = EnvironmentMode.NON_REPRODUCIBLE;
        }
        return defaultIfNull(environmentMode, EnvironmentMode.REPRODUCIBLE);
    }
public EnvironmentMode determineEnvironmentMode() {
        if (environmentMode == EnvironmentMode.PRODUCTION) {
            environmentMode = EnvironmentMode.NON_REPRODUCIBLE;
        }
        return defaultIfNull(environmentMode, EnvironmentMode.REPRODUCIBLE);
    }
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