(a) At the hearing, the legislative body shall hear the evidence offered by persons interested.
(b) If the legislative body finds, from all the evidence submitted, that the street, highway, or public service easement described in the notice of hearing or petition is unnecessary for present or prospective public use, the legislative body may adopt a resolution vacating the street, highway, or public service easement. The resolution of vacation may provide that the vacation occurs only after conditions required by the legislative body have been satisfied and may instruct the clerk that the resolution of vacation not be recorded until the conditions have been satisfied.