Set::SubclassCompatible#to_set

# File tmp/rubies/ruby-4.0.0/lib/set/subclass_compatible.rb, line 72
def to_set(*args, &block)
  klass = if args.empty?
    Set
  else
    warn "passing arguments to Enumerable#to_set is deprecated", uplevel: 1
    args.shift
  end
  return self if instance_of?(Set) && klass == Set && block.nil? && args.empty?
  klass.new(self, *args, &block)
end