Usually when things/files are packaged from simple files to single monstrosity, you no longer have the ability to ls/dir to lookup what things/files exist.
An example is a Java jar, where to list for example all the packaged files you either cannot or you need to open a zip stream and figure out yourself.
Also in Java and other languages with limited introspection you cannot for example list all the classes that implement the interface X.
Create a script than generates all the information you want.
Put that script in the build/compile process.
Include the file in the project.
Write some code to parse the file.
Example of listing all the inheritance properties by finding all the extends keyword:
grep -hr extends | sed -E 's/.*class (\w+) extends (\w+) .*/\2 -> \1/'
Parent -> Child1 Parent -> Child2 ...
No need to say again and again "This is not supported, I cannot do it", supported yourself, you are a damn programmer!