public java.util.List<DoubleRange> getIopsToStorageRatio() {
        if (iopsToStorageRatio == null) {
            iopsToStorageRatio = new com.amazonaws.internal.SdkInternalList<DoubleRange>();
        }
        return iopsToStorageRatio;
    }
<p>
The valid range of Provisioned IOPS to gibibytes of storage multiplier. For example, 3-10, which means that
provisioned IOPS can be between 3 and 10 times storage.
</p>

@return The valid range of Provisioned IOPS to gibibytes of storage multiplier. For example, 3-10, which means
        that provisioned IOPS can be between 3 and 10 times storage.
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/ValidStorageOptions.java