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-- @module ActionInterval
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-- @function [parent=#ActionInterval] getAmplitudeRate 
-- @param self
-- @return float#float ret (return value: float)
        
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-- @function [parent=#ActionInterval] setAmplitudeRate 
-- @param self
-- @param #float float
        
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-- @function [parent=#ActionInterval] getElapsed 
-- @param self
-- @return float#float ret (return value: float)
        
return nil