text: from dataclasses import dataclass
  from typing import List
  
  from blspy import AugSchemeMPL, G2Element
  
  from mogua.types.blockchain_format.coin import Coin
  from mogua.types.blockchain_format.sized_bytes import bytes32
  from mogua.util.streamable import Streamable, streamable
  from mogua.wallet.util.debug_spend_bundle import debug_spend_bundle
  
  from .coin_solution import CoinSolution
  
  
  @dataclass(frozen=True)
  @streamable
  class SpendBundle(Streamable):
      """
      This is a list of coins being spent along with their solution programs, and a single
      aggregated signature. This is the object that most closely corresponds to a bitcoin
      transaction (although because of non-interactive signature aggregation, the boundaries
      between transactions are more flexible than in bitcoin).
      """
  
      coin_solutions: List[CoinSolution]
      aggregated_signature: G2Element
  
      @classmethod
      def aggregate(cls, spend_bundles) -> "SpendBundle":
          coin_solutions: List[CoinSolution] = []
          sigs: List[G2Element] = []
          for bundle in spend_bundles:
              coin_solutions += bundle.coin_solutions
              sigs.append(bundle.aggregated_signature)
          aggregated_signature = AugSchemeMPL.aggregate(sigs)
          return cls(coin_solutions, aggregated_signature)
  
      def additions(self) -> List[Coin]:
          items: List[Coin] = []
          for coin_solution in self.coin_solutions:
              items.extend(coin_solution.additions())
          return items
  
      def removals(self) -> List[Coin]:
          """This should be used only by wallet"""
          return [_.coin for _ in self.coin_solutions]
  
      def fees(self) -> int:
          """Unsafe to use for fees validation!!!"""
          amount_in = sum(_.amount for _ in self.removals())
          amount_out = sum(_.amount for _ in self.additions())
  
          return amount_in - amount_out
  
      def name(self) -> bytes32:
          return self.get_hash()
  
      def debug(self, agg_sig_additional_data=bytes([3] * 32)):
          debug_spend_bundle(self, agg_sig_additional_data)
  
      def not_ephemeral_additions(self):
          all_removals = self.removals()
          all_additions = self.additions()
          result: List[Coin] = []
  
          for add in all_additions:
              if add in all_removals:
                  continue
              result.append(add)
  
          return result
  