('giraffe', tc.create_signed_integer_field_class(32)),
('gnu', tc.create_signed_integer_field_class(8)),
('mosquito', tc.create_signed_integer_field_class(8)),
('giraffe', tc.create_signed_integer_field_class(32)),
('gnu', tc.create_signed_integer_field_class(8)),
('mosquito', tc.create_signed_integer_field_class(8)),