code: public String getMetadataSingleString(String name) {
      String s = "";
      if (metadata == null)
        createMetadataDictionary();
      if (metadata.contains(name))
        s = metadata.get(name).toString();
      return s;
    }
docs: Gets an string with the value of the first tag matching the given tag name.<br>
  
  @param name the tag name
  @return the metadata single string