def METHOD_NAME(self):
    self.connection_string = os.getenv("COMMUNICATION_SAMPLES_CONNECTION_STRING")
    self.rooms_client = RoomsClient.from_connection_string(self.connection_string)
    self.identity_client = CommunicationIdentityClient.from_connection_string(
        self.connection_string)
    self.rooms = []
    self.participant_1 = RoomParticipant(
        communication_identifier=self.identity_client.create_user(),
        role=ParticipantRole.PRESENTER)
    self.participant_2 = RoomParticipant(
        communication_identifier=self.identity_client.create_user(),
        role=ParticipantRole.CONSUMER)