code: def succs(self, Gx, core_x, v, Gx_node=None):
      succ = [n for n in Gx.successors(v) if n in core_x]
      if Gx_node:
          succ.append(Gx_node)
      return succ
  
imports: import networkx
  from .isomorphvf2 import DiGraphMatcher, GraphMatcher
label_desc: Use image node_id 8 for calling the TimeRespectingDiGraphMatcher obj's underlying member method code with example usage: obj.succs(Gx, core_x, v, Gx_node) and returns: succ