human
Solve the following python programming problem given the following code:
def grow(self, window, util, direction) : 
    if (window.num_groups () == 1) : 
        return 
layout = window.layout () 
    lm = ll.LayoutManager (layout) 
    rows = lm.rows () 
    cols = lm.cols () 
    cells = layout ['cells'] 
    width = height = dx = dy = 0 
    for (g, cell) in enumerate (cells) : 
        view = window.active_view_in_group (g) 
        (w, h) = view.viewport_extent () 
        width += w 
        height += h 
        dx += (cols [cell [2]] - cols [cell [0]]) 
        dy += (rows [cell [3]] - rows [cell [1]]) 
width /= dx 
    height /= dy 
    current = window.active_group () 
    view = util.view 
    count = util.get_count () 
    if (direction in ('g', 's')) : 
        unit = (view.line_height () / height) 
else : 
        unit = (view.em_width () / width) 
window.set_layout (lm.extend (current, height, unit, count)) 
    def ensure_visible() : 
        for g in range (window.num_groups ()) : 
            view = window.active_view_in_group (g) 
            util = CmdUtil (view) 
            util.ensure_visible (util.get_point ()) 
sublime.set_timeout (ensure_visible, 50) 

    
    

    Fix the buggy line: window.set_layout (lm.extend (current, height, unit, count))
assistant
#Here is Python program to fix the buggy line: window.

window.set_layout (lm.extend (current, direction, unit, count))