protected function getCredentialsLists() {
        if (!$this->_credentialsLists) {
            $this->_credentialsLists = new CredentialListList($this->version, $this->solution['sid']);
        }

        return $this->_credentialsLists;
    }
protected function getCredentialsLists() {
        if (!$this->_credentialsLists) {
            $this->_credentialsLists = new CredentialListList($this->version, $this->solution['sid']);
        }

        return $this->_credentialsLists;
    }
protected function getCredentialsLists ( ) { if ( ! $ this -> _credentialsLists ) { $ this -> _credentialsLists = new CredentialListList ( $ this -> version , $ this -> solution [ 'sid' ] ) ; } return $ this -> _credentialsLists ; }
Access the credentialsLists

@return \Twilio\Rest\Trunking\V1\Trunk\CredentialListList
Access the credentialsLists