public function showWelcomeMessage()
{
echo sprintf("<div class='updated'><p>The <strong>%s</strong> plugin has been installed at <em>%s</em></p></div>", $this->pluginName, $this->path);
// pass logger to your class whenever you want to log something
// ensure log directory has correct permissions
$this->log->Info('Welcome message shown', ['action' => 'admin_notices']);
}
