lib/public/Group/Backend/ABackend.php:83:49: InvalidReturnType: The declared return type 'array<string, array{displayName: string}>' for OCP\Group\Backend\ABackend::getGroupsDetails is incorrect, got 'array<string, array{displayName?: string}>' (see https://psalm.dev/011)

lib/public/Group/Backend/ABackend.php:92:10: InvalidReturnStatement: The inferred type 'array<string, array{displayName?: string}>' does not match the declared return type 'array<string, array{displayName: string}>' for OCP\Group\Backend\ABackend::getGroupsDetails (see https://psalm.dev/128)