What't the means about var () in golang : <p>I go though the code generated by go-swagger, found follow code:</p>

<pre><code>// NewReceiveLearningLabActsParams creates a new ReceiveLearningLabActsParams object
// with the default values initialized.
func NewReceiveLearningLabActsParams() ReceiveLearningLabActsParams {
    var ()
    return ReceiveLearningLabActsParams{}
}
</code></pre>

<p>I noticed here:</p>

<pre><code>var ()
</code></pre>

<p>I totally not understand what's the means, could anyone help me understand this code? thanks</p>
