Is there a programmatic way to generate s-functions directly out of Simulink blocks

I would require wrapping the logic of my Simulink model to be obfuscated or hidden. One of the ways to perform it is to create a similar s-function block with the object code generated from the same Simulink block. I am facing difficulty in realizing this programmatically. Is there a way around to realize them programmatically or rely on GUI to create manually.

The workflow can be summarized as follows:

Code generation settings:

• Change the system target file to 'rtwsfcn.tlc'.
• In Code generation settings enable 'create new model'
• In Code generation settings uncheck 'Generate code only'.

Once the above steps are done go ahead with building the model block programmatically:

oldBlockPath=getfullname(gcbh);
newBlockHandle=slbuild(gcbh) % gcbh points to handle of current selected block 
newBlockPath=getfullname(newBlockHandle);
pil_block_replace(oldBlockPath,newBlockPath);

The above code snippet can implement the idea at a fundamental level for a selected block.

Reference: MATLAB Answer's