code: public String getSrcSetEntry() {
  
          StringBuffer result = new StringBuffer(128);
          if (m_currentScaler.isValid()) {
              // append the image source
              result.append(getSrcUrl());
              result.append(" ");
              // append width
              result.append(m_currentScaler.getWidth());
              result.append("w");
          }
          return result.toString();
      }
docs: Generates a srcset attribute parameter for this image bean.<p>
  
  @return a srcset attribute parameter for this image bean