module Sketchup
class Layers < Entity
    include Enumerable
    def []
    end
    def add
    end
    def add_observer
    end
    def at
    end
    def count
    end
    def each
    end
    def length
    end
    def purge_unused
    end

    # @since SketchUp 2015
    # @param layer a {Layer}, layer name, or index number
    def remove(layer)
    end

    def remove_observer
    end
    def unique_name
    end
end
end