Editing Code Generation Template When Using MATLAB Coder

I'm trying to add a static char to all of the code generation done using MATLAB coder. I can accomplish this in Simulink by editing the ert_code_template.cgt file, but I can't figure out how to accomplish this using the MATLAB coder. Is there a code template file similar to the ert_code_template.cgt that I can edit? This is an example of how I've edited the ert_code_template.cgt:

%% Code insertion section (required)

%% These are required tokens. You can insert comments and other tokens in

%% between them, but do not change their order or remove them.

%%

#ifndef RTW_SOURCE_TIMESTAMP_

#define RTW_SOURCE_TIMESTAMP_

static char source_generated_on_timestamp[] = "%<SourceGeneratedOn>";

#endif

%<Includes>

%<Defines>

%<Types>

%<Enums>

%<Definitions>

%<Declarations>

%<Functions>

[Andy]

Hi Marc, you should be able to use the following commands to use a code generation template for codegen:

 cfgObj = coder.config(‘lib’,’ecoder’,true); % Create an E-coder config object
 CGTFile = ‘myCGTFile.cgt’;                  % Specify the custom CGT File 
 cfgObj.CodeTemplate = coder.MATLABCodeTemplate(CGTFile);   % Use custom template
 codegen –config cfgObj myFile

See https://www.mathworks.com/help/ecoder/ug/code-generation-template-cgt-files-for-matlab-code-generation.html for more information.