code: def AppendCols(self, numCols=1):
      return True
  
imports: import wx
  import wx.grid
  from cellprofiler_core.preferences import get_error_color
  from cellprofiler_core.setting import Table
label_desc: Use image node_id 14 for calling the TableController obj's underlying member method code with example usage: obj.AppendCols(numCols) and returns: True