You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: SequenceRadial.m
    path of file: ./repos/qups/src
    
    the code of the file until where you have to start completion: classdef SequenceRadial < Sequence
    % SEQUENCERADIAL - Sequence defined by range/angle coordinates
    %
    % A SEQUENCERADIAL object expands the Sequence class by offereing 
    % utilities for transmit sequences that can be defined by range and 
    % angle with respect to an apex.
    %
    % U
    
function set.ranges(self, r), self.focus = self.apex + r .* self.vectors(); end
        function set.angles(self, a), self.focus = self.apex + self.ranges .* SequenceRadial.vectors_(a); end
        function moveApex(self, apex)
            % MOVEAPEX - Set a new apex, preserving the ranges and angles
            %
            % MOVEAPEX(self, apex) moves the apex for the SequenceRadial,
            % preserving the ranges / angles of the Sequence
            %
            % See also: SEQUENCERADIAL/SETPOLAR
            arguments
                self SequenceRadial
                apex (3,1)
            end
            
            % to move the apex, if ranges and angles are there, preserve
            % them for a SEQUENCERADIAL
            [r, a] = deal(self.ranges, self.angles);
            self.setPolar(r, a, apex);
        end