src/SPID/XML/saml/Issuer.php:19:13: PropertyNotSetInConstructor: Property SimpleSAML\SPID\XML\saml\Issuer::$content is not defined in constructor of SimpleSAML\SPID\XML\saml\Issuer or in any methods called in the constructor (see https://psalm.dev/074)

src/SPID/XML/saml/Issuer.php:44:5: MethodSignatureMismatch: Method SimpleSAML\SPID\XML\saml\Issuer::fromXML with return type 'SimpleSAML\SPID\XML\saml\Issuer' is different to return type 'SimpleSAML\XML\StringElementTrait' of inherited method SimpleSAML\XML\StringElementTrait::fromXML (see https://psalm.dev/042)