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: oklab2rgb.m
    path of file: ./repos/gptoolbox/imageprocessing
    
    the code of the file until where you have to start completion: function rgb = oklab2rgb(ok)
  % OKLAB2RGB Convert colors stored in OKLab color space to RGB color space
  %
  % rgb = oklab2rgb(ok)
  %
  % Inputs:

    
function rgb = oklab2rgb(ok)
  % OKLAB2RGB Convert colors stored in OKLab color space to RGB color space
  %
  % rgb = oklab2rgb(ok)
  %
  % Inputs:
  %   ok  #h by #w by 3 image of colors or #ok by 3 list of colors
  % Outputs:
  %   rgb  converted ok colors (same size as ok)
  %
  % See also: rgb2lin, lin2rgb, oklab2lin , rgb2oklab, lin2oklab
  lin = oklab2lin(ok);
  rgb = lin2rgb(lin);
end