Creates and returns a new instance of the System.Net.WebPermission class.
A System.Net.WebPermission corresponding to the security declaration.
The SocketPermissionAttribute.CreatePermission method is called by the security system, not by application code.
The security information described by System.Net.WebPermissionAttribute is stored in the metadata of the attribute target, which is the class to which System.Net.WebPermissionAttribute is applied. The system accesses the information at run time. The system uses the System.Net.WebPermission returned by SocketPermissionAttribute.CreatePermission to convert the security information of the attribute target to a serializable form stored in metadata.