generateBody example

public function getAttachments(): array
    {
        return $this->attachments;
    }

    public function getBody(): AbstractPart
    {
        if (null !== $body = parent::getBody()) {
            return $body;
        }

        return $this->generateBody();
    }

    /** * @return void */
    public function ensureValidity()
    {
        $this->ensureBodyValid();

        if ('1' === $this->getHeaders()->getHeaderBody('X-Unsent')) {
            throw new LogicException('Cannot send messages marked as "draft".');
        }

public function getAttachments(): array
    {
        return $this->attachments;
    }

    public function getBody(): AbstractPart
    {
        if (null !== $body = parent::getBody()) {
            return $body;
        }

        return $this->generateBody();
    }

    /** * @return void */
    public function ensureValidity()
    {
        $this->ensureBodyValid();

        if ('1' === $this->getHeaders()->getHeaderBody('X-Unsent')) {
            throw new LogicException('Cannot send messages marked as "draft".');
        }