private void walkBindingNode(
     final Compiler.Context context, final AST node, final Definition message) {
   List<AST> children = node.getChildNodes();
   final String identifier = getString(children.get(0));
   final Binding binding = message.createLanguageBinding(identifier);
   for (int i = 1; i < children.size(); i += 2) {
     final String key = getString(children.get(i));
     final String value = getString(children.get(i + 1));
     final Binding.Data prev = binding.getData(key);
     if (prev != null) {
       context.error(
           node.getCodePosition(),
           identifier
               + " language binding for "
               + message.getName()
               + " already defined for '"
               + key
               + "'");
       context.warning(prev.getCodePosition(), "this was the location of the previous definition");
     }
     binding.setData(key, value, node.getCodePosition());
   }
 }