1. Dart
2. dart:core
3. UnsupportedError
4. toString method

##### UnsupportedError class

1. Constructors
2. UnsupportedError
3. Properties
4. message
5. hashCode
6. runtimeType
7. stackTrace
8. Methods
9. toString
10. noSuchMethod
11. Operators
12. operator ==

# toString method

String toString ()
override

Returns a string representation of this object.

## Implementation

    String toString() => "Unsupported operation: $message";