Sends a HEAD request to the server.
HEAD is very similar to GET, with the only difference being that only the headers (but not the content) is returned.
HEAD is often use to retrieve the parameters of the resource, such as its size and modification date. If the request is successful, those details will be available via ResponseParameters and ResponseHeaders properties. Otherwise, an exception will be thrown, and the error details published in StatusCode and ReasonPhrase properties.
Note that any parameters you intend to pass to this method should be properly encoded before this method is called.