expand: `expand_fragment` -> `fully_expand_fragment`
expand: `expand_fragment` -> `fully_expand_fragment`

graydon/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust