* * Parse array into a string with specified style * @param array the array * @param prefix the prefix string * @style specified style e.g.

* * Convert all params of body other than type of readable into content * @param body source Model * @param content target Model * @return void */.

* * Get signature according to stringToSign, secret * @param stringToSign the signed string * @param secret accesskey secret * @return the signature */.

* * Get signature according to signedParams, method and secret * @param signedParams params which need to be signed * @param method http method e.g.

* * Get the string to be signed according to request * @param request which contains signed messages * @return the signed string */.

* * Get throttling param * @param the response headers * @return time left */.

* * Get timestamp * @return the timestamp string */.

* * Parse filter into a object which's type is map[string]string * @param filter query param * @return the object */.

* * Parse filter into a form string * @param filter object * @return the string */.