This functions plots the aggregated cross-validation curve produced by
rcv.glmnet() or the lambda path for the averaged glmnet.fit object.
rcv.glmnet, object.
character, uses glmnet::plot.cv.glmnet() for "cv" and
glmnet::plot.glmnet() for "path".
further arguments passed to plot.cv.glmnet or plot.glmnet.
For what = "path" the original plot.glmnet is extended by labelling the
top nlabel (default: 9) labels on the right side of the plot.