$print
method, this will call that method.
Otherwise, it will print out the members of the object, and optionally, the
members of the inherited objects.
"print"(x, ..., flat = TRUE)
print
method, further arguments
will be passed to it. Otherwise, these arguments are unused.TRUE
(the default), show a flattened list of all local
and inherited members. If FALSE
, show the inheritance hierarchy.