toricCycle(D)
This method converts a ToricDivisor into a ToricCycle.
i1 : X = toricProjectiveSpace 3;
i2 : toricCycle(X_0) o2 = X {0} o2 : ToricCycle on X
i3 : toricCycle(X_1+X_2) o3 = X + X {1} {2} o3 : ToricCycle on X