Code reuse between several Embedded Matlab Function

I have the same question as this 2011 inquiry:

http://www.mathworks.com/matlabcentral/answers/6998-code-reuse-between-several-embedded-matlab-function

Is it possible to share code between several Embedded Matlab Function blocks rather than to duplicate it ? In other words, can you have multiple instances of an Embedded Matlab Function block that reference the same piece of code? If not, is there some way to do this with s-functions?

[Ryan Livingston]

Is the answer to that question insufficient in some way?

[KSevcik]

Ryan,

The previous answer specifically answered how to do this with embedded matlab functions, but i found that this was not really the best solution. I ended creating a level-2 s-function that I could then reuse in several different places.