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: Murat_outputTesting.m
    path of file: ./repos/MuRAT/bin
    
    the code of the file until where you have to start completion: function m          =   Murat_outputTesting(G,d,reguParam,inversionMethod)
% function m        =   Murat_outputTesting(G,d,reguParam,inversionMethod)
%
% PRODUCES the outputs of checkerboard and spike tests
%
% Input parameters:
%    G:                 inversion matrix
%    d:                 data vector

    
function m          =   Murat_outputTesting(G,d,reguParam,inversionMethod)
% function m        =   Murat_outputTesting(G,d,reguParam,inversionMethod)
%
% PRODUCES the outputs of checkerboard and spike tests
%
% Input parameters:
%    G:                 inversion matrix
%    d:                 data vector
%    reguParam:         regularization parameter
%    inversionMethod:   choice of inversion technique
%    
% Output parameters:
%    m:                 inversion solution

if isequal(inversionMethod,'Tikhonov')
    [U,S,V]         =   svd(G);
    m               =   tikhonov(U,diag(S),V,d,reguParam);
    
elseif isequal(inversionMethod,'Iterative')
    optionsI        =   IRset('MaxIter', 500,'RegMatrix','Identity',...
        'IterBar','off','RegParam', reguParam,'verbosity','off');
    
    [m,~]           =   IRcgls(G,d,optionsI);
    
elseif isequal(inversionMethod,'Hybrid')
    options         =   IRset('RegParam', reguParam,'IterBar','off',...
    'verbosity','off');
    
    [m,~]           =   IRhybrid_lsqr(G, d, options);
    
end