Is there an equivalent to Nuke's "insert comp node" in Natron 2.3?

Hi!

is it possible to import/insert some nodes into Natron through external .nk files? In Nuke there is a “insert comp node” function, but it seems this is missing somehow…

FYI, this function is useful for importing lens distortion data from e.g. 3DEqualizer directly into an existing node graph!

Thanks, RS