`fpca.face` indicates what the data is via `Details` at https://github.com/refunders/refund/blob/master/R/fpca.face.R#L8 but there are no details in this help file
fpca.faceindicates what the data is viaDetailsat https://github.com/refunders/refund/blob/master/R/fpca.face.R#L8 but there are no details in this help file