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: WalkerStroke.m
    path of file: ./repos/BPL/bottomup/initialize
    
    the code of the file until where you have to start completion: classdef WalkerStroke < BetterHandle
   % WalkerStroke: A single stroke in a parse of a graph skeleton
    
   properties 
      start_pt  % [1 x 2] where the stroke starts (can be redundant)
                %         only necessary when ei is empty
      ei        % [k x 1] index vector of sequence of edges
      ei_flip   % [k x 1 bool] do we flip each edge, or leave as in T.S?
      T   % Undirecte
    
function vstk = get.stk(this)
           vstk = this.get_path();
        end
        
        % Given the current point, where can we go?
        %
        % Ouput
        %  cell_traj: [m x 1 cell] trajectory fragments we can choose from
        %  vei: [m x 1] list of edges we can go to
        function [cell_traj,vei] = get_moves(this)
           [vei,vei_flip] = this.T.get_branches(this.curr_pt);
           n = numel(vei);
           cell_traj = cell(n,1);
           for i=1:n
               vindx = vei(i);
               traj = this.T.S{vindx};
               if vei_flip(i)
                  traj = flip(traj); 
               end