public void the_operation_is_not_selected()
        {
            given_filter();
            given_operations();
            given_request_header_content_type(MediaType.ApplicationOctetStream);
            given_registration_codec <ApplicationOctetStreamCodec>();
            given_request_entity_body(new byte[] { 0 });

            when_filtering_operations();

            FilteredOperations.FirstOrDefault(x => x.Name == "Post").ShouldBeNull();
        }
 IOperation then_operation_should_be_selected(string methodName)
 {
     return(FilteredOperations.FirstOrDefault(x => x.Name == methodName).ShouldNotBeNull());
 }