implement it for the base class

Author: matthiasdiener

arraycontext/impl/pytato/__init__.py

@@ -204,6 +204,10 @@ def supports_nonscalar_broadcasting(self):
     def permits_advanced_indexing(self):
         return True
 
+    @memoize_method
+    def get_target(self):
+        return None
+
     # }}}
 
 # }}}