public void testGetAttribute()
 {
     Assert.AreEqual("customAttrValue1", customEntry.getAttribute("customAttr1"));
     Assert.IsNull(customEntry.getAttribute("unexpectedAttr"));
     Assert.IsNull(customEntry.getAttribute(Constants.ENTRY_CONTENTCLASS));
     Assert.IsNull(customEntry.getAttribute(Constants.ENTRY_ID));
     Assert.IsNull(customEntry.getAttribute(Constants.ENTRY_SOURCE));
     Assert.IsNull(customEntry.getAttribute(Constants.ENTRY_SOURCE_ID));
     Assert.IsNull(customEntry.getAttribute(Constants.ENTRY_COMMENT));
 }