TypeLibrary Explorer & Editor UI

What is the feature you'd like to have?
I want to display to look like after.png's function call, not like before.png's function call, when I load binary to binja.
This would require updating existing function definitions or defining function definitions. (For example, I want to update mmap function definitions.)

before.png

after.png

However, since mmap is already defined in typelib/x86_64/libc.so.6.bntl, I think there is no other way to change mmap function definitions but to update typelib/x86_64/libc.so.6.bntl. (If you have a way to do this, please let me know.)

So I would like an easy way to update function definitions in another typelib without updating the existing typelib/x86_64/libc.so.6.bntl.

Additional Information:
By the way, I generated a new typelibrary by this code(https://github.com/pr0xy-t/binaryninja-plugin/blob/main/snippets/Build_Type_Lib.py),and overwrote the default typelibrary(typelib/x86_64/libc.so.6.bntl) then I generated after.png.

Start by reviewing snippets/Build_Type_Lib.py and the existing typelib/x86_64/libc.so.6.bntl referenced in the report. Clarify the TypeLibrary Explorer and Editor entry points, then define how users can update or override function definitions in another typelibrary without replacing the existing libc typelibrary; done means the mmap call displays with the requested definition.