Print a readable summary of a qbrms_multinomial_fit, including its
reference category, the list of categories, and per-category fixed-effect
summaries when available.
# S3 method for qbrms_multinomial_fit
summary(object, digits = 2, ...)The input object, returned invisibly.
A qbrms_multinomial_fit.
Integer; number of decimal places to display.
Unused.