System.Security.Permissions.EnvironmentPermission.AddPathList C# (CSharp) Method

        public void AddPathList(EnvironmentPermissionAccess flag, string pathList)
        {
        }

        /// <summary>Creates a permission that is the union of the current permission and the specified permission.</summary>
        /// <returns>A new permission that represents the union of the current permission and the specified permission.</returns>
        /// <param name="other">A permission to combine with the current permission. It must be of the same type as the current permission. </param>
        /// <exception cref="T:System.ArgumentException">The <paramref name="other" /> parameter is not null and is not of the same type as the current permission. </exception>
        public override IPermission Union(IPermission other)
        {
            EnvironmentPermission environmentPermission = this.Cast(other);

            if (environmentPermission == null)
            {
                return(this.Copy());
            }
            if (this.IsUnrestricted() || environmentPermission.IsUnrestricted())
            {
                return(new EnvironmentPermission(PermissionState.Unrestricted));
            }
            if (this.IsEmpty() && environmentPermission.IsEmpty())
            {
                return(null);
            }
            EnvironmentPermission environmentPermission2 = (EnvironmentPermission)this.Copy();
            string pathList = environmentPermission.GetPathList(EnvironmentPermissionAccess.Read);

            if (pathList != null)
            {
                environmentPermission2.AddPathList(EnvironmentPermissionAccess.Read, pathList);
            }
            pathList = environmentPermission.GetPathList(EnvironmentPermissionAccess.Write);
            if (pathList != null)
            {
                environmentPermission2.AddPathList(EnvironmentPermissionAccess.Write, pathList);
            }
            return(environmentPermission2);
        }