Add a new general constraint of type GRB.GENCONSTR_NORM to a model.
A NORM constraint states that the resultant variable should be equal to the vector norm of the argument vector .
resvar: The resultant variable of the new constraint.
vars: Array of variables that are the operands of the new constraint. Note that this array may not contain duplicates.
which: Which norm to use. Options are 0, 1, 2, and GRB.INFINITY.
name: Name for the new general constraint.
New general constraint.