Errors: {
  org-dartlang-debug:synthetic_debug_expression:1:17: Error: Undefined name 'y'.
  () { return x + y; }
                  ^
  org-dartlang-debug:synthetic_debug_expression:1:13: Error: Undefined name 'x'.
  () { return x + y; }
              ^
}
static method /* from org-dartlang-debug:synthetic_debug_expression */ debugExpr() → dynamic
  return () → invalid-type {
    return invalid-expression "org-dartlang-debug:synthetic_debug_expression:1:13: Error: Undefined name 'x'.\n() { return x + y; }\n            ^"{<invalid>}.+(invalid-expression "org-dartlang-debug:synthetic_debug_expression:1:17: Error: Undefined name 'y'.\n() { return x + y; }\n                ^");
  };