code: def set_algorithms(self, signature=None, encryption=None,
                         serialization=None, compression=None):
          '''Set algorithms used for sealing. Defaults can not be overridden.'''
  
          self.signature_algorithms = \
              self._update_dict(signature, self.DEFAULT_SIGNATURE)
  
          self.encryption_algorithms = \
              self._update_dict(encryption, self.DEFAULT_ENCRYPTION)
  
          self.serialization_algorithms = \
              self._update_dict(serialization, self.DEFAULT_SERIALIZATION)
  
          self.compression_algorithms = \
              self._update_dict(compression, self.DEFAULT_COMPRESSIONf set_algorithms(self, signature=None, encryption=None,
                         serialization=None, compression=None):
          '''Set algorithms used for sealing. Defaults can not be overridden.'''
  
          self.signature_algorithms = \
              self._update_dict(signature, self.DEFAULT_SIGNATURE)
  
          self.encryption_algorithms = \
              self._update_dict(encryption, self.DEFAULT_ENCRYPTION)
  
          self.serialization_algorithms = \
              self._update_dict(serialization, self.DEFAULT_SERIALIZATION)
  
          self.compression_algorithms = \
              self._update_dict(compression, self.DEFAULT_COMPRESSION)
docs: Set algorithms used for sealing. Defaults can not be overridden.