| 123456789101112131415161718192021222324252627282930 | package seqimport "errors"type Tasker struct {	seq map[string]*Seq}func NewTasker() *Tasker {	return &Tasker{map[string]*Seq{}}}func (t *Tasker) Task(name string) *Seq {	v, ok := t.seq[name]	if !ok {		v = NewSeq()		t.seq[name] = v	}	return v}func (t *Tasker) Exec(name string, params ...interface{}) error {	s, ok := t.seq[name]	if !ok {		return errors.New("Task Not found")	}	return s.Exec(params...)}
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