code: @SuppressWarnings("unchecked")
      public Map<String, Object> getNextPropertiesParam(InputStream in, String strName, Map<String, Object> properties)
      {
          return (Map)this.getNextObjectParam(in, strName, properties);
      }
docs: Get the next (String) param.
  @param strName The param name (in most implementations this is optional).
  @param properties The temporary remote session properties
  @return The next param as a string.