When developing Plugin @Commands, it is sometimes convenient to specify options from which only one must be selected

For example:

• providing a maven GAV "org.jboss.seam.forge:forge-parent:1.0.0"
• specifying the path to said project "~/projects/forge/"

Both inputs are valid, but only one is required. If one is selected, the other should be hidden from completion. (Or some such interaction.)

If both are missing, Forge should prompt for one to be completed.