[Refactoring] Make helper template names short
fix Issue 10502 - Can't get fullyQualifiedName of a templated struct
Add sum to `std.algorithm`'s TOC
Merge pull request #1971 from monarchdodra/sumTOC

Add sum to `std.algorithm`'s TOC
Merge pull request #1967 from 9rnsr/fix10502

Issue 10502 - Can't get fullyQualifiedName of a templated struct