code: @Override
      public Object getRequestContents() {
          if (this.bodyParameters.size() == 0) {
              return "{}";
          } else {
              String jsonString = "";
              EntityActionBodyParameterMapper mapper = new EntityActionBodyParameterMapper();
              jsonString = mapper.toString(this.bodyParameters);
              return jsonString;
          }
      }
docs: /*
  (non-Javadoc)
  
  @see com.microsoft.windowsazure.services.media.entityoperations.
  EntityActionOperation#getRequestContents()