lib/Dropbox/Client.php
function buildUrlForGetOrPut($host, $path, $params = null)
    {
        return RequestUtil::buildUrlForGetOrPut($this->userLocale, $host, $path, $params);
    }
function buildUrlForGetOrPut($host, $path, $params = null)
    {
        return RequestUtil::buildUrlForGetOrPut($this->userLocale, $host, $path, $params);
    }
Build a URL for making a GET or PUT request.  Will add the "locale"
parameter.

@param string $host
Either the "API" or "API content" hostname from {@link getHost()}.
@param string $path
The "path" part of the URL.  For example, "/account/info".
@param array|null $params
URL parameters.  For POST requests, do not put the parameters here.
Include them in the request body instead.

@return string