addFilename: Add column to data containing name of file
Description
In arrow data retrieval, add file name column to tables. Replicated from https://github.com/apache/arrow/blob/main/r/R/dplyr-funcs-augmented.R because add_filename() is unexported in arrow.
Usage
addFilename()
Arguments
Value
A `FieldRef` Expression that refers to the filename augmented column.