pub(super) fn complete_macro_use(
acc: &mut Completions,
ctx: &CompletionContext<'_>,
extern_crate: Option<&ExternCrate>,
existing_imports: &[Path],
)pub(super) fn complete_macro_use(
acc: &mut Completions,
ctx: &CompletionContext<'_>,
extern_crate: Option<&ExternCrate>,
existing_imports: &[Path],
)