code: public void setIopsToStorageRatio(java.util.Collection<DoubleRange> iopsToStorageRatio) {
          if (iopsToStorageRatio == null) {
              this.iopsToStorageRatio = null;
              return;
          }
  
          this.iopsToStorageRatio = new java.util.ArrayList<DoubleRange>(iopsToStorageRatio);
      }
docs: <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>
  
  @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.