error: 'u8' is a reserved type name and cannot be used as an identifier
  --> examples/1125-diagnostics-reserved-name-method-param.sx:15:28
   |
15 |     greet :: (self: *Self, u8: s64) -> s64 {
   |                            ^^

error: 's16' is a reserved type name and cannot be used as an identifier
  --> examples/1125-diagnostics-reserved-name-method-param.sx:23:27
   |
23 |     bump :: (self: *Self, s16: s32) {
   |                           ^^^