public void AddAttributeTwice() {
			var response = new FetchResponse();
			response.AddAttribute(new AttributeValues("http://someattribute", "Value1"));
			response.AddAttribute(new AttributeValues("http://someattribute", "Value1"));
		}
		public void AddAttributeNull() {
			var response = new FetchResponse();
			response.AddAttribute(null);
		}
		public void AddTwoAttributes() {
			var response = new FetchResponse();
			response.AddAttribute(new AttributeValues("http://someattribute", "Value1"));
			response.AddAttribute(new AttributeValues("http://someOtherAttribute", "Value2"));
		}