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: in_tess_gii.m
    path of file: ./repos/brainstorm3/toolbox/io
    
    the code of the file until where you have to start completion: function TessMat = in_tess_gii(TessFile)
% IN_TESS_GII: Import GIfTI/BrainVisa .gii tessellation files.
%
% USAGE:  TessMat = in_tess_gii(TessFile);
%
% INPUT: 
%     - TessFile : full path to a tesselation file
% OUTPUT:
%     - TessMat:  Brainstorm tesselation structure
%
% SEE ALSO: in_tess

% @=============================================================================
% This function is part of the Brainstorm software:
% https://neuroimage.usc.edu/brainstorm
% 
% Copyright (c) University of Southern California & McGill University
% This software is distributed under the terms of the GNU General Public License
% as published by the Free Software Foundation. Further details on the GPLv3
% license can be found at http://www.gnu.org/copyleft/gpl.html.

    
function TessMat = in_tess_gii(TessFile)
% IN_TESS_GII: Import GIfTI/BrainVisa .gii tessellation files.
%
% USAGE:  TessMat = in_tess_gii(TessFile);
%
% INPUT: 
%     - TessFile : full path to a tesselation file
% OUTPUT:
%     - TessMat:  Brainstorm tesselation structure
%
% SEE ALSO: in_tess

% @=============================================================================
% This function is part of the Brainstorm software:
% https://neuroimage.usc.edu/brainstorm
% 
% Copyright (c) University of Southern California & McGill University
% This software is distributed under the terms of the GNU General Public License
% as published by the Free Software Foundation. Further details on the GPLv3
% license can be found at http://www.gnu.org/copyleft/gpl.html.
% 
% FOR RESEARCH PURPOSES ONLY. THE SOFTWARE IS PROVIDED "AS IS," AND THE
% UNIVERSITY OF SOUTHERN CALIFORNIA AND ITS COLLABORATORS DO NOT MAKE ANY
% WARRANTY, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF
% MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, NOR DO THEY ASSUME ANY
% LIABILITY OR RESPONSIBILITY FOR THE USE OF THIS SOFTWARE.
%
% For more information type "brainstorm license" at command prompt.
% =============================================================================@
%
% Authors: Francois Tadel, 2012-2017

import sun.misc.BASE64Decoder;

% Read GII file
[sXml, Values] = in_gii(TessFile);
% Initialize matrices
Vertices = {};
Faces = {};
% For each data entry
for iArray = 1:length(sXml.GIFTI.DataArray)   
    % Identify type
    switch (sXml.GIFTI.DataArray(iArray).Intent)
        case 'NIFTI_INTENT_POINTSET'
            Vertices{end