class_docstr: Runs a graph with sub-graphs that need to run sequentially. Each sub-graph
  takes its inputs from the outputs of the previous sub-graph.
class_docstr_tok: ["Runs","a","graph","with","sub-graphs","that","need","to","run","sequentially",".","Each","sub-graph","takes","its","inputs","from","the","outputs","of","the","previous","sub-graph","."]
code: def is_finished(self):
      return all(v is None for v in self.next_vals)
  
imports: from collections import OrderedDict
label_desc: Use image node_id 5 for calling the RunnerMultiGPU obj's underlying member method code with example usage: obj.is_finished() and returns: all