code: @Deprecated
      public final void configureRegion(Regions region) {
          checkMutability();
          if (region == null)
              throw new IllegalArgumentException("No region provided");
          this.setRegion(Region.getRegion(region));
      }
docs: Convenient method for setting region.
  
  @param region region to set to; must not be null.
  
  @see #setRegion(Region)
  @deprecated use {@link AwsClientBuilder#setRegion(String)}