def preprocess(
source: gv.Source,
stagger: int = None,
fanout: bool = False,
chain: int = None,
) -> gv.Source:
"""
Preprocess source for rendering.
Parameters
----------
source
Graphviz source to preprocess
stagger
maximum Graphviz unflatten stagger
fanout
enable Graphviz unflatten fanout
chain
maximum Graphviz unflatten chain
"""
return source.unflatten(stagger=stagger, fanout=fanout, chain=chain)
