{"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"///"}]}
    /// It only exists to support an efficient implementation of `mem_copy_repeatedly`.
    /// This is dangerous to use as it can violate internal `Allocation` invariants!
    pub fn init_mask_apply_copy(&mut self, copy: InitCopy, range: AllocRange, repeat: u64) {