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: spm_gen_ind.m
    path of file: ./repos/spm/toolbox/dcm_meeg
    
    the code of the file until where you have to start completion: function [y] = spm_gen_ind(P,M,U)
% Generate a prediction of trial-specific induced activity
% FORMAT [y] = spm_gen_ind(P,M,U)
%
% P - parameters
% M - neural-mass model structure
% U - trial-specific effects
%
% y - prediction
%

    
function [y] = spm_gen_ind(P,M,U)
% Generate a prediction of trial-specific induced activity
% FORMAT [y] = spm_gen_ind(P,M,U)
%
% P - parameters
% M - neural-mass model structure
% U - trial-specific effects
%
% y - prediction
%
%__________________________________________________________________________

% Karl Friston
% Copyright (C) 2005-2022 Wellcome Centre for Human Neuroimaging


% within-trial inputs
%==========================================================================

% check input u = f(t,P,M)
%--------------------------------------------------------------------------
try
    fu  = M.fu;
catch
    fu  = 'spm_erp_u';
end