xargs.go
func (x *XargsFilter) LimitArgs(n int) *XargsFilter {
	x.limitArgs = n
	return x
}
func (x *XargsFilter) LimitArgs(n int) *XargsFilter {
	x.limitArgs = n
	return x
}
// LimitArgs adjusts x so that no more than n input items are passed to
// a single command execution.  If not called, an unspecified number
// of input items may be handled via a single command execution.