Set of conditions applying to a request. This is equivalent to the HTTP
conditional headers.
See Also:If-Match See Also:If-Modified-Since See Also:If-None-Match See Also:If-Unmodified-Since author: Jerome Louvel (contact@noelios.com)
Returns the conditional status of a variant using a given method.
Parameters: method - The request method. Parameters: variant - The representation whose entity tag or date ofmodification will be tested Null if the requested method can be performed, the status of theresponse otherwise.