code: def incidence(self):
      if self.centroid_added:
          self.structure = np.zeros(
              [2**self.dim + 1, 2**self.dim + 1], dtype=int
          )
      else:
          self.structure = np.zeros(
              [2**self.dim, 2**self.dim], dtype=int
          )
  
      for v in self.HC.C0():
          for v2 in v.nn:
              self.structure[v.index, v2.index] = 1
  
      return
  
imports: import numpy
  import copy
label_desc: Use image node_id 7 for calling the Complex obj's underlying member method code with example usage: obj.incidence() without return types