Using filters marked by a "G" in python-fu (GEGL?)

[kolopo]

I was writing a python script to apply a filter to all layers in an image. When I went to try and add selective gaussian blur(took me a while to figure out that's a surface blur in GIMP) I could not find a way to do it. Doing some searching it seems the G stands for GEGL. Trying to use GEGL operation from tools menu the corresponding or similar/equivalent filter seems to be "bilateral filter". Intuitively it feels like I should be able to use any filter as long as I provide parameters with python-fu, but I guess not. Is there really no way to use these filters from python-fu? 

just fyi, I'm a beginner to GIMP, and a bit familiar with python.