{"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"///"}]}
    /// Fails if the type is not a ZST or if it doesn't have a known size.
    /// Create a constant that represents a new zero-sized constant of type T.
    pub fn try_new_zero_sized(ty: Ty) -> Result<MirConst, Error> {