toString method Null safety

String toString()

A string representation of this object.

Some classes have a default textual representation, often paired with a static parse function (like int.parse). These classes will provide the textual representation as their string representation.

Other classes have no meaningful textual representation that a program will care about. Such classes will typically override toString to provide useful information when inspecting the object, mainly for debugging or logging.


String toString() {
  if (details == null) {
    return '$callingMethod: ($code) $message';
  } else {
    return '$callingMethod: ($code) $message\n$details';