code: public SigningImageFormat withSupportedFormats(String... supportedFormats) {
          if (this.supportedFormats == null) {
              setSupportedFormats(new java.util.ArrayList<String>(supportedFormats.length));
          }
          for (String ele : supportedFormats) {
              this.supportedFormats.add(ele);
          }
          return this;
      }
docs: <p>
  The supported formats of an AWS Signer signing image.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setSupportedFormats(java.util.Collection)} or {@link #withSupportedFormats(java.util.Collection)} if you
  want to override the existing values.
  </p>
  
  @param supportedFormats
  The supported formats of an AWS Signer signing image.
  @return Returns a reference to this object so that method calls can be chained together.
  @see ImageFormat