def post(path, api_version, data = {}, headers = {})
      execute :post, path, api_version, data, headers
    end
def post(path, api_version, data = {}, headers = {})
      execute :post, path, api_version, data, headers
    end
Perform a POST request.

 # +path+: the path that will be requested. Must be something like <tt>"checkout"</tt>.
 # +api_version+: the current PagSeguro API version of the requested service
 # +data+: the data that will be sent as body data. Must be a Hash.
 # +headers+: any additional header that will be sent through the request.