Model.getPWLObj()
getPWLObj ( var )
Retrieve the piecewise-linear objective function for a variable.
The function returns a list of tuples, where each provides the
and 
coordinates for the points that define the piecewise-linear
objective function.
Refer to the description of setPWLObj for additional information on how the points relate to the overall function.
Arguments:
var: A Var object that gives the variable whose objective function is being retrieved.
Return value:
The points that define the piecewise-linear objective function.
Example usage:
> print(model.getPWLObj(var)) [(1, 1), (2, 2), (3, 4)]
