+ /**\r
+ * Runs the specified command using the specified Pazpar2 client\r
+ * Sets the Pazpar2 response as an XML response string to be retrieved by\r
+ * getResponse().\r
+ * \r
+ * In case of an exception, an error response is generated, the document\r
+ * element being the same as it would have been if successful (named after\r
+ * the command, that is). \r
+ * \r
+ */\r