Change-Id: I37737cfd65fffa4f19ad35d3443e881acc4918db
* If the module may only be used with a certain format module,
* it should override this method to return an instance of that formatter.
* A value of null means the default format will be used.
+ * @note Do not use this just because you don't want to support non-json
+ * formats. This should be used only when there is a fundamental
+ * requirement for a specific format.
* @return mixed Instance of a derived class of ApiFormatBase, or null
*/
public function getCustomPrinter() {