UnsupportedOperationException constructor

Thrown to indicate that a requested operation is not supported.

This exception extends RuntimeException and is typically used when a method or feature is not implemented or intentionally unsupported.

Example

throw UnsupportedOperationException('Removing items is not supported.');

Optionally, a cause can be passed to provide the underlying reason:

throw UnsupportedOperationException(
  'Serialization not supported',
  cause: Exception('Missing serializer'),
);