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-- @module AutoPolygon
-- @parent_module cc
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-- create an AutoPolygon and initialize it with an image file
-- the image must be a 32bit PNG for current version 3.7
-- param filename a path to image file, e.g., "scene1/monster.png".
-- return an AutoPolygon object;
-- @function [parent=#AutoPolygon] AutoPolygon
-- @param self
-- @param #string filename
-- @return AutoPolygon#AutoPolygon self (return value: cc.AutoPolygon)
return nil