onError abstract method

OutOfBandAuthentication onError(
  1. dynamic onError(
    1. OperationError
    )
)

Specifies the object that will be invoked if the authentication failed.

IMPORTANT
Providing the onError is required.

Params:

Returns: an OutOfBandAuthentication object.

Implementation

OutOfBandAuthentication onError(Function(OperationError) onError);