When x is a SingleCellAssay and y is a
vector, data.frame or AnnotatedDataFrame, an attempt is
made bind it to the columns of the cellData or featureData.
The behavior depends on the number of rows/length of
y. If nrow(y) == nrow(x), then the cellData
is used. If nrow(y) == ncol(x), then the cellData is
used. It is an error if neither mathces.
# S4 method for SingleCellAssay,ANY
combine(x, y, ...)SingleCellAssay
vector, data.frame or AnnotatedDataFrame
ignored
SingleCellAssay