code: def gen_feature_maxnum(self):
      for name in self.node_meta:
          aa = name.split("_")
          self.node_feature_maxnum[aa[0]] += 1
      for name in self.edge_meta:
          aa = name.split("_")
          self.edge_feature_maxnum[aa[0]] += 1
  
file_path: euler/euler/tools/graph_meta.py
imports: import json
  from euler.tools.util import *
label_desc: Use image node_id 2 for calling the GraphMeta obj's underlying member method code with example usage: obj.gen_feature_maxnum() without return types