what does `low level` mean in analysis package? e.g. `low-level-api-fir`

# compiler

[Icyrockton]

what does low level mean in analysis package? e.g. low-level-api-fir

[dmitriy.novozhilov]

This is an artifact of of old naming. Originally analysis api was called a "high-level API" (because it hides internals of the compiler) and implementation of it was called "low-level API" (because they actually work with compiler)