text: # This is an automatically generated file.
  # DO NOT EDIT or your changes may be overwritten
  import base64
  from typing import List
  from xdrlib import Packer, Unpacker
  
  from .public_key import PublicKey
  from .uint32 import Uint32
  from ..exceptions import ValueError
  
  __all__ = ["SCPQuorumSet"]
  
  
  class SCPQuorumSet:
      """
      XDR Source Code
      ----------------------------------------------------------------
      struct SCPQuorumSet
      {
          uint32 threshold;
          PublicKey validators<>;
          SCPQuorumSet innerSets<>;
      };
      ----------------------------------------------------------------
      """
  
      def __init__(
          self,
          threshold: Uint32,
          validators: List[PublicKey],
          inner_sets: List["SCPQuorumSet"],
      ) -> None:
          if validators and len(validators) > 4294967295:
              raise ValueError(
                  f"The maximum length of `validators` should be 4294967295, but got {len(validators)}."
              )
          if inner_sets and len(inner_sets) > 4294967295:
              raise ValueError(
                  f"The maximum length of `inner_sets` should be 4294967295, but got {len(inner_sets)}."
              )
          self.threshold = threshold
          self.validators = validators
          self.inner_sets = inner_sets
  
      def pack(self, packer: Packer) -> None:
          self.threshold.pack(packer)
          packer.pack_uint(len(self.validators))
          for validator in self.validators:
              validator.pack(packer)
          packer.pack_uint(len(self.inner_sets))
          for inner_set in self.inner_sets:
              inner_set.pack(packer)
  
      @classmethod
      def unpack(cls, unpacker: Unpacker) -> "SCPQuorumSet":
          threshold = Uint32.unpack(unpacker)
          length = unpacker.unpack_uint()
          validators = []
          for _ in range(length):
              validators.append(PublicKey.unpack(unpacker))
          length = unpacker.unpack_uint()
          inner_sets = []
          for _ in range(length):
              inner_sets.append(SCPQuorumSet.unpack(unpacker))
          return cls(
              threshold=threshold,
              validators=validators,
              inner_sets=inner_sets,
          )
  
      def to_xdr_bytes(self) -> bytes:
          packer = Packer()
          self.pack(packer)
          return packer.get_buffer()
  
      @classmethod
      def from_xdr_bytes(cls, xdr: bytes) -> "SCPQuorumSet":
          unpacker = Unpacker(xdr)
          return cls.unpack(unpacker)
  
      def to_xdr(self) -> str:
          xdr_bytes = self.to_xdr_bytes()
          return base64.b64encode(xdr_bytes).decode()
  
      @classmethod
      def from_xdr(cls, xdr: str) -> "SCPQuorumSet":
          xdr_bytes = base64.b64decode(xdr.encode())
          return cls.from_xdr_bytes(xdr_bytes)
  
      def __eq__(self, other: object):
          if not isinstance(other, self.__class__):
              return NotImplemented
          return (
              self.threshold == other.threshold
              and self.validators == other.validators
              and self.inner_sets == other.inner_sets
          )
  
      def __str__(self):
          out = [
              f"threshold={self.threshold}",
              f"validators={self.validators}",
              f"inner_sets={self.inner_sets}",
          ]
          return f"<SCPQuorumSet {[', '.join(out)]}>"
  