As discovered by @cyqsimon in #17 there a mismatch between the documentation and code in that the builders are not using mut. This PR introduces mut to match the documentation. This PR still needs a test to prove or disprove if the documentation is in fact correct.
As discovered by @cyqsimon in #17 there a mismatch between the documentation and code in that the builders are not using mut. This PR introduces mut to match the documentation. This PR still needs a test to prove or disprove if the documentation is in fact correct.