System.Security.Permissions.FileIOPermission.IsUnrestricted C# (CSharp) Method

        public bool IsUnrestricted() { return false; }
        public void SetPathList(FileIOPermissionAccess access, string path) { }

        public override bool IsSubsetOf(IPermission target)
        {
            FileIOPermission fiop = Cast(target);

            if (fiop == null)
            {
                return(false);
            }
            if (fiop.IsEmpty())
            {
                return(IsEmpty());
            }

            if (IsUnrestricted())
            {
                return(fiop.IsUnrestricted());
            }
            else if (fiop.IsUnrestricted())
            {
                return(true);
            }

            if ((m_AllFilesAccess & fiop.AllFiles) != m_AllFilesAccess)
            {
                return(false);
            }
            if ((m_AllLocalFilesAccess & fiop.AllLocalFiles) != m_AllLocalFilesAccess)
            {
                return(false);
            }

            if (!KeyIsSubsetOf(appendList, fiop.appendList))
            {
                return(false);
            }
            if (!KeyIsSubsetOf(readList, fiop.readList))
            {
                return(false);
            }
            if (!KeyIsSubsetOf(writeList, fiop.writeList))
            {
                return(false);
            }
            if (!KeyIsSubsetOf(pathList, fiop.pathList))
            {
                return(false);
            }

            return(true);
        }