Defunct: download ACS data in the pre-2022 sequence-file format
Source:R/deprecated.R
get_acs_old.Rdget_acs_old() and the entire sequence-file code path were removed in
ACSdownload 3.0.0. Use get_acs_new(), which reads the Census Bureau's
table-based summary file format (available for end year 2022 and later).