The data to be processed. Can be data.frame,
data.table, or a list of these objects.
Every object must have columns in the immunarch compatible format.
immunarch_data_format
Competent users may provide advanced data representations:
DBI database connections, Apache Spark DataFrame from copy_to or a list
of these objects. They are supported with the same limitations as basic objects.
Note: each connection must represent a separate repertoire.