Elastica\Query\MoreLikeThis::setMinDocFrequency PHP Method

    public function setMinDocFrequency($minDocFreq)
    {
        return $this->setParam('min_doc_freq', (int) $minDocFreq);
    }

 public function testSetMinDocFrequency()
 {
     $query = new MoreLikeThis();
     $freq = 2;
     $query->setMinDocFrequency($freq);
     $this->assertEquals($freq, $query->getParam('min_doc_freq'));
 }