$self->driver->find_element($default_submit_selector)->click

    my @elts = map { my $size = $_->get_size; ( $size->{height} && $size->{width} ) ? $_ : () } $self->driver->find_elements($default_submit_selector);

    die "Too many forms are displayed. Cannot submit." if @elts > 1;

    return $elts[0]->click;