>, nothing happens.</p>
<p>On errors from this stream, the <code>onError</code> handler is called with the
error object and possibly a stack trace.</p>
<p>The <code>onError</code> callback must be of type <code>void onError(error)</code> or
<code>void onError(error, StackTrace stackTrace)</code>. If <code>onError</code> accepts
two arguments it is called with the error object and the stack trace
(which could be <code>null</code> if this stream itself received an error without
stack trace).
Otherwise it is c