The sole issue to be resolved at an administrative herring held under the "implied consent" law (K.S.A. 1981 Supp. 8-1001) is the reasonableness of a person's refusal to submit to a request to take a blood-alcohol test. At the hearing, the only testimony needed from the arresting officer is the sworn report required in the statute, and if the sworn report addresses the necessary issues, there is no need for the officer to attend the hearing. However, if the sworn report fails to discuss whether the licensee was capable of making a voluntary response to the request to submit to a blood-alcohol test, and it appears that this issue will be raised in the administrative hearing, the testimony of the arresting officer is essential and the attendance of the arresting officer may be compelled by subpoena [K.S.A. 8-255(b)]. Cited herein: K.S.A. 8-255, K.S.A. 1981 Supp. 8-1001 and K.S.A. 54-101.