Returns the absolute URL, which includes the scheme, hostname and possibly port (as per {@link BaseURLSource#getBaseURL(boolean)}). By default, the scheme is chosen to match the current {@linkplain Request#isSecure() requests security}.
Note: the semantics of this method changed between Tapestry 5.1 and 5.2. Most code should use toString() or {@link #toURI()} (which are equivalent) instead.
@return the complete, qualified URL, including query parameters.