human
Solve the following python programming problem given the following code:
def form_workflow_frames(self, if_prefix, module, form) : 
    '
        post_form_workflow = \'module\':
          * Add stack frame and a command with value = "module command"

        post_form_workflow = \'previous_screen\':
          * Add stack frame and a command with value = "module command"
          * Find longest list of common datums between form entries for the module and add datums
            to the stack frame for each.
          * Add a command to the frame with value = "form command"
          * Add datums to the frame for any remaining datums for that form.
          * Remove any autoselect items from the end of the stack frame.
          * Finally remove the last item from the stack frame.
        ' 
    from corehq.apps.app_manager.models import WORKFLOW_PREVIOUS, WORKFLOW_MODULE, WORKFLOW_ROOT, WORKFLOW_FORM, WORKFLOW_PARENT_MODULE 
    def frame_children_for_module(module_, include_user_selections = True) : 
        frame_children = [] 
        if module_.root_module : 
            frame_children.extend (frame_children_for_module (module_.root_module)) 
if include_user_selections : 
            this_module_children = self.helper.get_frame_children (module_.get_form (0), module_only = True) 
            for child in this_module_children : 
                if (child not in frame_children) : 
                    frame_children.append (child) 
else : 
            module_command = id_strings.menu_id (module_) 
            if (module_command != id_strings.ROOT) : 
                frame_children.append (CommandId (module_command)) 
return frame_children 
stack_frames = [] 
    if (form.post_form_workflow == WORKFLOW_ROOT) : 
        stack_frames.append (StackFrameMeta (if_prefix, None, [], allow_empty_frame = True)) 
else : 
        if (form.post_form_workflow == WORKFLOW_MODULE) : 
            frame_children = frame_children_for_module (module, include_user_selections = False) 
            stack_frames.append (StackFrameMeta (if_prefix, None, child)) 
else : 
            if...

    
    

    Fix the buggy line: stack_frames.append (StackFrameMeta (if_prefix, None, child))
assistant
#Here is Python code to find longest list of common datums between form entries for the module and add datums
.

stack_frames.append (StackFrameMeta (if_prefix, None, frame_children))