public ValidStorageOptions withIopsToStorageRatio(DoubleRange... iopsToStorageRatio) {
        if (this.iopsToStorageRatio == null) {
            setIopsToStorageRatio(new com.amazonaws.internal.SdkInternalList<DoubleRange>(iopsToStorageRatio.length));
        }
        for (DoubleRange ele : iopsToStorageRatio) {
            this.iopsToStorageRatio.add(ele);
        }
        return this;
    }
<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>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setIopsToStorageRatio(java.util.Collection)} or {@link #withIopsToStorageRatio(java.util.Collection)} if
you want to override the existing values.
</p>

@param iopsToStorageRatio
       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.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/ValidStorageOptions.java