Any municipality, by an ordinance of its governing body, may establish an official master plan of the municipality. Such ordinance shall make it the duty of some appropriate official or employee of the municipality to file for record immediately, with the recorder of the county in which the area covered by the plan is situated, a certificate showing that the municipality has established an official master plan. Such plan shall be final and conclusive with respect to the location and width of streets, ways, plazas, open spaces, and public easements, and the location of parks and playgrounds, and the establishment of public rights in lands shown thereon. The official master plan is declared to be established to conserve and promote the public health, safety, and general welfare of the municipality.