Given one or more sets of intervals, produce a new set compactly representing points contained in at least one interval of each input object.
# S4 method for Intervals_virtual
interval_intersection(x, ..., check_valid = TRUE)# S4 method for missing
interval_intersection(x, ..., check_valid = TRUE)
A single object representing points contained in each of the objects
  supplied in the x and ... arguments.
An "Intervals" or "Intervals_full" object.
Additional objects of the same classes permitted for x.
Should validObject be called before passing to
    compiled code? Also see interval_overlap.
See interval_union and
  interval_complement, which are used to produce the
  results.