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: gbtest50.m
    path of file: ./repos/SuiteSparse/GraphBLAS/GraphBLAS/test
    
    the code of the file until where you have to start completion: function gbtest50
%GBTEST50 test GrB.ktruss and GrB.tricount

% SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2023, All Rights Reserved.
% SPDX-License-Identifier: Apache-2.0

rng ('default') ;

% The MathWorks has mangled the Harwell-Boeing west0479 matrix,
% by reducing the precision of its entries, and dropping one entry.
% The correct version is in the HB/west0479 matrix at sparse.tamu.edu.

% load west0479 ; %#ok<*LOAD>
load west0479_correct ; %#ok<*LOAD>
west0479 = Problem.A ;


    
function gbtest50
%GBTEST50 test GrB.ktruss and GrB.tricount

% SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2023, All Rights Reserved.
% SPDX-License-Identifier: Apache-2.0

rng ('default') ;

% The MathWorks has mangled the Harwell-Boeing west0479 matrix,
% by reducing the precision of its entries, and dropping one entry.
% The correct version is in the HB/west0479 matrix at sparse.tamu.edu.

% load west0479 ; %#ok<*LOAD>
load west0479_correct ; %#ok<*LOAD>
west0479 = Problem.A ;

A = GrB.offdiag (west0479) ;
A = A+A' ;
C3a  = GrB.ktruss (A) ;
C3  = GrB.ktruss (A, 3) ;
assert (isequal (C3a, C3)) ;
C3  = GrB.ktruss (A, 3, 'check') ;
assert (isequal (C3a, C3)) ;

ntriangles = sum (C3, 'all') / 6 ;
assert (ntriangles == 237) ;

C4a = GrB.ktruss (A, 4) ;
C4b = GrB.ktruss (C3, 4) ;          % this is faster
assert (isequal (C4a, C4b)) ;

nt2 = GrB.tricount (A) ;
assert (ntriangles == nt2) ;

d = GrB.entries (A, 'col', 'degree') ;
nt2 = GrB.tricount (A, d) ;
assert (ntriangles == nt2) ;

nt2 = GrB.tricount (A, 'check', d) ;
assert (ntriangles == nt2) ;

nt2 = GrB.tricount (A, d, 'check') ;
assert (ntriangles == nt2) ;

rng ('default') ;
for k = 1:200
    if (mod (k, 10) == 1)
        fprintf ('.') ;
    end