The Crunch API expects that Subtotals, Headings, and
other insertions all have the same shape. Before sending insertions to the
server, we need to call makeInsertion on any insertions to make sure they
are proper Insertions. This process sometimes requires a variable's
categories object (e.g. in order to convert from category names to category
ids)
# S4 method for Subtotal
makeInsertion(x, var_categories)# S4 method for Heading
makeInsertion(x, var_categories)
# S4 method for Insertion
makeInsertion(x, var_categories)
# S4 method for SummaryStat
makeInsertion(x, var_categories)
an object the is a child of Insertion (e.g.
Subtotal, Heading)
categories (from categories(variable)) to used by
makeInsertions to make Insertions from a child object (e.g. Subtotal or
Heading)
an Insertion object