Errors: {
  Setter not found: 'z'. (@0)
}
static method /* from org-dartlang-debug:synthetic_debug_expression */ debugExpr() → dynamic
  return throw new dart.core::NoSuchMethodError::withInvocation(null, new dart.core::_InvocationMirror::_withType(#z, 34, const <dart.core::Type>[], dart.core::List::unmodifiable<dynamic>(<dynamic>[2]), dart.core::Map::unmodifiable<dart.core::Symbol, dynamic>(const <dart.core::Symbol, dynamic>{})));