code: def solve(self, rhs):
      s = np.zeros(rhs.shape, dtype=self.dtype)
      s[1:] = self.lusolve(rhs[1:])
      return s
  
imports: import networkx
label_desc: Use image node_id 3 for calling the SuperLUInverseLaplacian obj's underlying member method code with example usage: obj.solve(rhs) and returns: s