t removes use of abstract Namer
t removes use of abstract Namer

Co-Authored-By: Tim Preece <40b5840c2c710d516b06284d4efee17b7a975c19@users.noreply.github.com>
Co-Authored-By: Clare Macrae <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@cfmacrae.fastmail.co.uk>
Co-Authored-By: Emily Bache <f8ba2427a000d5abf71f49e2ce638c69bdf0c466@users.noreply.github.com>
Co-Authored-By: Olof Bjarnason <2795848cb14d621c88f7605c0c4d2b009457b859@gmail.com>

approvals/ApprovalTests.Python,approvals/ApprovalTests.Python,tdpreece/ApprovalTests.Python,approvals/ApprovalTests.Python