public function issuerDomainPolicies(): array
    {
        $idps = array_map(
            function (PolicyMapping $mapping) {
                return $mapping->issuerDomainPolicy();
            }, $this->_mappings);
        return array_values(array_unique($idps));
    }
public function issuerDomainPolicies(): array
    {
        $idps = array_map(
            function (PolicyMapping $mapping) {
                return $mapping->issuerDomainPolicy();
            }, $this->_mappings);
        return array_values(array_unique($idps));
    }
public function issuerDomainPolicies ( ) : array { $ idps = array_map ( function ( PolicyMapping $ mapping ) { return $ mapping -> issuerDomainPolicy ( ) ; } , $ this -> _mappings ) ; return array_values ( array_unique ( $ idps ) ) ; }
Get all mapped issuer domain policy OIDs.

@return string[]
Get all mapped issuer domain policy OIDs .