Create an addon with following execute method
@Override
public Result execute(UIExecutionContext context) throws Exception {
Project project = getSelectedProject(context.getUIContext());

Iterator<ProjectFacet> facets = project.getFacets().iterator();
while (facets.hasNext())

{ System.out.println(facets.next()); }

return Results.success("Testing addons.");

}

install the addon in Forge 2 (suppose it has the new command test-command)

when execute following commands in forge 2

project-new --named demo --type war
faces-setup --facesVersion 2.2
test-command

The facesFacet is not in the list.