escaped example

while (!$this->lexer->current->isA(EmailLexer::S_DQUOTE) && !$this->lexer->current->isA(EmailLexer::S_EMPTY)) {
            if (isset($special[$this->lexer->current->type]) && $setSpecialsWarning) {
                $this->warnings[CFWSWithFWS::CODE] = new CFWSWithFWS();
                $setSpecialsWarning = false;
            }
            if ($this->lexer->current->isA(EmailLexer::S_BACKSLASH) && $this->lexer->isNextToken(EmailLexer::S_DQUOTE)) {
                $this->lexer->moveNext();
            }

            $this->lexer->moveNext();

            if (!$this->escaped() && isset($invalid[$this->lexer->current->type])) {
                return new InvalidEmail(new ExpectingATEXT("Expecting ATEXT between DQUOTE"), $this->lexer->current->value);
            }
        }

        $prev = $this->lexer->getPrevious();

        if ($prev->isA(EmailLexer::S_BACKSLASH)) {
            $validQuotedString = $this->checkDQUOTE();
            if ($validQuotedString->isInvalid()) return $validQuotedString;
        }

        

//this has no coverage. Condition is repeated from above one         if (!$this->lexer->isNextTokenAny(array(EmailLexer::S_SP, EmailLexer::S_HTAB))) {
            return new InvalidEmail(new CRLFAtTheEnd(), $this->lexer->current->value);
        }

        return new ValidEmail();
    }

    protected function isFWS(): bool
    {
        if ($this->escaped()) {
            return false;
        }

        return in_array($this->lexer->current->type, self::FWS_TYPES);
    }
}