@Test
public void testExctractSoapBody() {

    assertEquals(contents, extractSoapBody(envelopeWithNamespacePrefixes));
    assertEquals(contents, extractSoapBody(envelopeWithoutNamespacePrefixes));
    assertEquals("", extractSoapBody(emptyEnvelopeWithNamespacePrefixes));
    assertEquals("", extractSoapBody(emptyEnvelopeWithoutNamespacePrefixes));
    assertEquals("", extractSoapBody(emptyEnvelopeWithNamespacePrefixesShort));
    assertEquals("", extractSoapBody(emptyEnvelopeWithoutNamespacePrefixesShort));
    
    Assert.assertNull(extractSoapBody(null));
    Assert.assertEquals(totallyBad, extractSoapBody(totallyBad));
}