Zendesk\API\Resources\Core\UserIdentities::requestVerification PHP Method

This sends a verification email to the user, asking him to click a link in order to verify ownership of the email address

public requestVerification ( array $params = [] ) : null \| stdClass
$params	array
return	null \| stdClass

    public function requestVerification(array $params = [])
    {
        return $this->makePutRequest(__FUNCTION__, $params);
    }

UserIdentities