fails:Net::HTTP#head2 when passed no block sends a head request to the passed path and returns the response
fails:Net::HTTP#head2 when passed no block returns a Net::HTTPResponse object
fails:Net::HTTP#head2 when passed a block sends a head request to the passed path and returns the response
fails:Net::HTTP#head2 when passed a block yields the response to the passed block
fails:Net::HTTP#head2 when passed a block returns a Net::HTTPResponse object
