code: public java.util.List<String> getSupportedTierList() {
          if (supportedTierList == null) {
              supportedTierList = new com.amazonaws.internal.SdkInternalList<String>();
          }
          return supportedTierList;
      }
docs: <p>
  The tiers in which the platform runs.
  </p>
  
  @return The tiers in which the platform runs.