Snap: How to accede to snap action codes

Hello everyone. During SNAP installation, I have seen that there is the option to install something for SNAP/Python interface. My question is: Is it possible to see the codes relevant to snap actions like baseline calculation, speckle filtering in order to understand how this operations are implemented in the software?
I hope to have benn clear in the exposition. Thank you.

Where the source code can be found is explained on the web page.
http://step.esa.int/main/community/developers/
The following developer guide might also be of interest for you:
https://senbox.atlassian.net/wiki/spaces/SNAP/pages/8847381/Developer+Guide
baseline calculation and speckle filtering you will find somewhere in the s1tbx.

thank you!