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: gptoolbox_version.m
    path of file: ./repos/gptoolbox/utility
    
    the code of the file until where you have to start completion: function v = gptoolbox_version()
  % GPTOOLBOX_VERSION Returns version of GPTOOLBOX as a string
  %
  % v = gptoolbox_version()
  %


    
function v = gptoolbox_version()
  % GPTOOLBOX_VERSION Returns version of GPTOOLBOX as a string
  %
  % v = gptoolbox_version()
  %

  % This file should contain the current version number of gptoolbox
  % World.Major.Minor
  % Anyone may increment Minor to indicate a small change.
  % Major indicates a large change or large number of changes.
  % World indicates a substantial change or release.
  v = '0.1.2';
end