@Test
public void requireNotNullMessageSupplier() {

    String errorMsg = "Blah blah";
    DockerCloudUtils.requireNonNull(new Object(), () -> errorMsg);
    assertThatExceptionOfType(NullPointerException.class).isThrownBy(() -> DockerCloudUtils.requireNonNull(null,
            () -> errorMsg)).withMessage("Blah blah");
}