@Test
public void testGetBinaryFile() {

	BinaryFile binaryFile = new BinaryFile(
		"contentType", "fileName", null, 0);
	MultipartBody multipartBody = MultipartBody.of(
		Collections.singletonMap("file", binaryFile), __ -> _objectMapper,
		Collections.emptyMap());
	assertThat(multipartBody.getBinaryFile("file"), is(binaryFile));
	assertThat(multipartBody.getBinaryFile("null"), is(nullValue()));
}