@Test
public void getConfigurationObjectGetResultNull() throws Exception {

    // SETUP
    when(this.dlmsConnection.get(any(AttributeAddress.class))).thenReturn(null);
    // CALL
    assertThatExceptionOfType(ProtocolAdapterException.class).isThrownBy(() -> {
        this.instance.getConfigurationObject(this.conn);
    });
}