# HG changeset patch
# User Claus Gittinger <cg@exept.de>
# Date 1486722287 -3600
# Node ID d72bb2507c8e74087cebbf4f96dd4944da40bcbf
# Parent  0c8f81adbee0dbb006f287e67184761dfbb09b13
#OTHER by cg
added: #isAbstract

diff -r 0c8f81adbee0 -r d72bb2507c8e SocketAddress.st
--- a/SocketAddress.st	Fri Feb 10 11:22:15 2017 +0100
+++ b/SocketAddress.st	Fri Feb 10 11:24:47 2017 +0100
@@ -540,6 +540,14 @@
     ^ self subclassResponsibility
 !
 
+isAbstract
+    "Return if this class is an abstract class.
+     True is returned here for myself only; false for subclasses.
+     Abstract subclasses must redefine this again."
+
+    ^ self == SocketAddress.
+!
+
 knownClassFromCode:code
     "this is a compatibility method;
      VW expects the internal unix codes here - however, in ST/X,