--------------------------------
-- @module PhysicsContactPostSolve
--------------------------------
-- @function [parent=#PhysicsContactPostSolve] getFriction 
-- @param self
-- @return float#float ret (return value: float)
        
--------------------------------
-- @function [parent=#PhysicsContactPostSolve] getSurfaceVelocity 
-- @param self
-- @return point_table#point_table ret (return value: point_table)
        
--------------------------------
-- @function [parent=#PhysicsContactPostSolve] getRestitution 
-- @param self
-- @return float#float ret (return value: float)
        
return nil