src/Action/Questions/DateTime.php
public function renderSystemIntent()
    {
        $out = [];

        $out['intent'] = 'actions.intent.DATETIME';
        $out['data'] = [
            '@type'      => 'type.googleapis.com/google.actions.v2.DateTimeValueSpec',
            'dialogSpec' => [
                'requestDatetimeText' => $this->requestDateTimeText,
                'requestDateText'     => $this->requestDateText,
                'requestTimeText'     => $this->requestTimeText,
            ],
        ];

        return $out;
    }
public function renderSystemIntent()
    {
        $out = [];

        $out['intent'] = 'actions.intent.DATETIME';
        $out['data'] = [
            '@type'      => 'type.googleapis.com/google.actions.v2.DateTimeValueSpec',
            'dialogSpec' => [
                'requestDatetimeText' => $this->requestDateTimeText,
                'requestDateText'     => $this->requestDateText,
                'requestTimeText'     => $this->requestTimeText,
            ],
        ];

        return $out;
    }
Render System Intent as array.

@return null|array