Add TODO to refact later.

Author: theengineear

plotly/graph_objs/graph_objs.py

@@ -425,6 +425,8 @@ def strip_style(self):
             else:
                 try:
                     if INFO[obj_key]['keymeta'][key]['key_type'] == 'style':
+
+                        # TODO: use graph_objs_tools.value_is_data
                         if isinstance(self[key], six.string_types):
                             del self[key]
                         elif not hasattr(self[key], '__iter__'):