original_string: public static function get_messages_parameters() {
          return new external_function_parameters(
              array(
                  'useridto' => new external_value(PARAM_INT, 'the user id who received the message, 0 for any user', VALUE_REQUIRED),
                  'useridfrom' => new external_value(
                      PARAM_INT, 'the user id who send the message, 0 for any user. -10 or -20 for no-reply or support user',
                      VALUE_DEFAULT, 0),
                  'type' => new external_value(
                      PARAM_ALPHA, 'type of message to return, expected values are: notifications, conversations and both',
                      VALUE_DEFAULT, 'both'),
                  'read' => new external_value(PARAM_BOOL, 'true for getting read messages, false for unread', VALUE_DEFAULT, true),
                  'newestfirst' => new external_value(
                      PARAM_BOOL, 'true for ordering by newest first, false for oldest first',
                      VALUE_DEFAULT, true),
                  'limitfrom' => new external_value(PARAM_INT, 'limit from', VALUE_DEFAULT, 0),
                  'limitnum' => new external_value(PARAM_INT, 'limit number', VALUE_DEFAULT, 0)
              )
          );
      }
code: public static function get_messages_parameters() {
          return new external_function_parameters(
              array(
                  'useridto' => new external_value(PARAM_INT, 'the user id who received the message, 0 for any user', VALUE_REQUIRED),
                  'useridfrom' => new external_value(
                      PARAM_INT, 'the user id who send the message, 0 for any user. -10 or -20 for no-reply or support user',
                      VALUE_DEFAULT, 0),
                  'type' => new external_value(
                      PARAM_ALPHA, 'type of message to return, expected values are: notifications, conversations and both',
                      VALUE_DEFAULT, 'both'),
                  'read' => new external_value(PARAM_BOOL, 'true for getting read messages, false for unread', VALUE_DEFAULT, true),
                  'newestfirst' => new external_value(
                      PARAM_BOOL, 'true for ordering by newest first, false for oldest first',
                      VALUE_DEFAULT, true),
                  'limitfrom' => new external_value(PARAM_INT, 'limit from', VALUE_DEFAULT, 0),
                  'limitnum' => new external_value(PARAM_INT, 'limit number', VALUE_DEFAULT, 0)
              )
          );
      }
code_tokens: public static function get_messages_parameters ( ) { return new external_function_parameters ( array ( 'useridto' => new external_value ( PARAM_INT , 'the user id who received the message, 0 for any user' , VALUE_REQUIRED ) , 'useridfrom' => new external_value ( PARAM_INT , 'the user id who send the message, 0 for any user. -10 or -20 for no-reply or support user' , VALUE_DEFAULT , 0 ) , 'type' => new external_value ( PARAM_ALPHA , 'type of message to return, expected values are: notifications, conversations and both' , VALUE_DEFAULT , 'both' ) , 'read' => new external_value ( PARAM_BOOL , 'true for getting read messages, false for unread' , VALUE_DEFAULT , true ) , 'newestfirst' => new external_value ( PARAM_BOOL , 'true for ordering by newest first, false for oldest first' , VALUE_DEFAULT , true ) , 'limitfrom' => new external_value ( PARAM_INT , 'limit from' , VALUE_DEFAULT , 0 ) , 'limitnum' => new external_value ( PARAM_INT , 'limit number' , VALUE_DEFAULT , 0 ) ) ) ; }
docstring: Get messages parameters description.
  
  @return external_function_parameters
  @since 2.8
docstring_tokens: Get messages parameters description .