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: feSet.m
    path of file: ./repos/encode/life/fe
    
    the code of the file until where you have to start completion: function fe = feSet(fe,param,val,varargin)
% Set fascicle evaluation parameters.
%
%   fe = feSet(fe,param,val,varargin)
%
%----------
% feSet(fe,'bvecsindices');
%----------   
% Set the a second diffusion signla measuremnt (repeat).
% Image_vals is the image array with the dwi signal taken from all the
% voxels in the new dataset the fe.roi
% fe = feSet(fe,'diffusion signal repeat',image_vals);
%----------

    
function fe = feSet(fe,param,val,varargin)
% Set fascicle evaluation parameters.
%
%   fe = feSet(fe,param,val,varargin)
%
%----------
% feSet(fe,'bvecsindices');
%----------   
% Set the a second diffusion signla measuremnt (repeat).
% Image_vals is the image array with the dwi signal taken from all the
% voxels in the new dataset the fe.roi
% fe = feSet(fe,'diffusion signal repeat',image_vals);
%----------
% Set the the s0 (no diffusion direction measurement) for a second
% diffusion signla measuremnt (repeat).
% Image_vals is the image array with the dwi signal taken from all the
% voxels in the new dataset the fe.roi
% fe = feSet(fe,'b0signalrepeat',image_vals);
%----------
%
%
%  Copyright (2020) The University of Texas at Austin
%
%  Franco Pestilli frakkopesto@gmail.com and 
%  Cesar F. Caiafa ccaiafa@gmail.com

% Check for input parameters
if notDefined('fe'),    error('fe structure required'); end