-- -----------------------------------------------------------------------------

-- | Find all possible paths from this given node, avoiding loops,
--   cycles, etc.
pathTree             :: (DynGraph g) => Decomp g a b -> [NGroup]
pathTree (Nothing,_) = []
pathTree             :: (DynGraph g) => Decomp g a b -> [NGroup]
pathTree (Nothing,_) = []
pathTree (Nothing,_) = []