optaplanner-core/src/main/java/org/optaplanner/core/api/domain/valuerange/ValueRangeFactory.java
public static CountableValueRange<BigInteger> createBigIntegerValueRange(BigInteger from, BigInteger to) {
        return new BigIntegerValueRange(from, to);
    }
public static CountableValueRange<BigInteger> createBigIntegerValueRange(BigInteger from, BigInteger to) {
        return new BigIntegerValueRange(from, to);
    }
Build a {@link CountableValueRange} of all {@link BigInteger} values between 2 bounds.
@param from inclusive minimum
@param to exclusive maximum, {@code >= from}
@return never null