Phpml\Association\Apriori::getRules PHP Метод

    public function getRules() : array
    {
        if (!$this->large) {
            $this->large = $this->apriori();
        }
        if ($this->rules) {
            return $this->rules;
        }
        $this->rules = [];
        $this->generateAllRules();
        return $this->rules;
    }

 public function testGetRules()
 {
     $apriori = new Apriori(0.4, 0.8);
     $apriori->train($this->sampleChars, []);
     $this->assertCount(19, $apriori->getRules());
 }