src/Tokenizer/Token.php
public function isEmpty()
    {
        @trigger_error(__METHOD__.' is deprecated and will be removed in 3.0.', E_USER_DEPRECATED);

        return null === $this->id && ('' === $this->content || null === $this->content);
    }
public function isEmpty()
    {
        @trigger_error(__METHOD__.' is deprecated and will be removed in 3.0.', E_USER_DEPRECATED);

        return null === $this->id && ('' === $this->content || null === $this->content);
    }
Check if token is empty, e.g. because of clearing.

@return bool

@deprecated since 2.4