print method
Implementation
String print([bool? prettyPrint]) {
String keyStr = (key is ImmutableCollection)
? (key as ImmutableCollection).toString(prettyPrint)
: key.toString();
String valueStr = (value is ImmutableCollection)
? (value as ImmutableCollection).toString(prettyPrint)
: value.toString();
return "$keyStr: $valueStr";
}