Errors: {
  org-dartlang-debug:synthetic_debug_expression:1:1: Error: Method not found: 'acos'.
  acos(1.0)
  ^^^^
}
method /* from org-dartlang-debug:synthetic_debug_expression */ debugExpr() → dynamic
  return invalid-expression "org-dartlang-debug:synthetic_debug_expression:1:1: Error: Method not found: 'acos'.\nacos(1.0)\n^^^^";