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: layoutRoot.m
    path of file: ./repos/erplab/studio_functions/GUI Layout Toolbox/layout
    
    the code of the file until where you have to start completion: function folder = layoutRoot()
%layoutRoot  Folder containing the GUI Layout Toolbox
%
%   folder = layoutRoot() returns the full path to the folder containing
%   the GUI Layout Toolbox.
%
%   Examples:
%   >> folder = layoutRoot()
%   folder = 'C:\tools\layouts2\layout'
%
%   See also: layoutVersion


    
function folder = layoutRoot()
%layoutRoot  Folder containing the GUI Layout Toolbox
%
%   folder = layoutRoot() returns the full path to the folder containing
%   the GUI Layout Toolbox.
%
%   Examples:
%   >> folder = layoutRoot()
%   folder = 'C:\tools\layouts2\layout'
%
%   See also: layoutVersion

%  Copyright 2009-2020 The MathWorks, Inc.

folder = fileparts( mfilename( 'fullpath' ) );

end