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: classifier_train.m
    path of file: ./repos/malini/Classifiers/LinearSVM/Classifier_Files
    
    the code of the file until where you have to start completion: function [Decision_Surf]=classifier_train(data, group_no, varargin)
if nargin == 2
    option =sprintf('-s 0 -t 0 -h 0 -q -c 1');
elseif  nargin >2
Optimizable_Paramters = length(varargin);

    
function [Decision_Surf]=classifier_train(data, group_no, varargin)
if nargin == 2
    option =sprintf('-s 0 -t 0 -h 0 -q -c 1');
elseif  nargin >2
Optimizable_Paramters = length(varargin);
option =sprintf('-s 0 -t 0 -h 0 -q -c %d', varargin{1}); % C value in SVM
else 
    error('Please check the optimizable parameters in your classifier');
end