docs: def import_public_key(self, pem_text):
  		""" Import a public key from data in PEM-format
  		:param pem_text: text with public key
  		:return: None
  		"""
  		if isinstance(pem_text, str) is True:
  			pem_text = pem_text.encode()
  		self.__set_public_key(
  			serialization.load_pem_public_key(pem_text, backend=default_backend())
  		)