configure the generation of the unions
generateUnions(
  upsetjs,
  min = 0,
  max = NULL,
  empty = FALSE,
  order.by = "cardinality",
  limit = NULL,
  colors = NULL
)an object of class upsetjs or upsetjs_proxy
minimum number of sets in an union
maximum number of sets in an union
whether to include empty intersections or not
order intersections by cardinality, degree, name or a combination of it
limit the number of intersections to the top N
the optional list with set name to color
the object given as first argument