clientv3/op.go
func (op Op) Txn() ([]Cmp, []Op, []Op) {
	return op.cmps, op.thenOps, op.elseOps
}
func (op Op) Txn() ([]Cmp, []Op, []Op) {
	return op.cmps, op.thenOps, op.elseOps
}
func ( op Op ) Txn ( ) ( [ ] Cmp , [ ] Op , [ ] Op ) { return op . cmps , op . thenOps , op . elseOps }
// Txn returns the comparison(if) operations, "then" operations, and "else" operations.
Txn returns the comparison ( if ) operations then operations and else operations .