<PackageReference Include="System.Security.Permissions" Version="11.0.0-rc.1.26425.128" />

System.Security.Permissions.IsolatedStorageFilePermissionAttribute

Allows security actions for IsolatedStorageFilePermission to be applied to code using declarative security. This class cannot be inherited.

Initializes a new instance of the IsolatedStorageFilePermissionAttribute class with the specified SecurityAction.