code: def Serialize(self):
      s = b""
      s += write_correct_data("uint64_t", self.id)
      s += write_correct_data("int32_t", self.type)
      s += write_correct_data("float", self.weight)
  
      g_idx, n, w, t_ids, t_wei = self.convert_neighbor(self.neighbor)
      s += write_list(t_ids, "int32_t")
      s += write_list(t_wei, "float")
      s += write_list(g_idx, "int32_t")
      s += write_list(n, "uint64_t")
      s += write_list(w, "float")
  
      g_idx, n, w, t_ids, t_wei = self.convert_neighbor(
          self.in_neighbor
      )
      s += write_list(t_ids, "int32_t")
      s += write_list(t_wei, "float")
      s += write_list(g_idx, "int32_t")
      s += write_list(n, "uint64_t")
      s += write_list(w, "float")
  
      f_idx, f = convert_feature(self.sparse)
      s += write_list(f_idx, "int32_t")
      s += write_list(f, "uint64_t")
  
      f_idx, f = convert_feature(self.dense)
      s += write_list(f_idx, "int32_t")
      s += write_list(f, "float")
  
      f_idx, f = convert_feature(self.binary)
      s += write_list(f_idx, "int32_t")
      s += write_string("".join(f))
      return s
  
file_path: euler/euler/tools/node.py
imports: import struct
  from euler.tools.util import *
label_desc: Use image node_id 7 for calling the Node obj's underlying member method code with example usage: obj.Serialize() and returns: s