@abstractmethod<EOL><INDENT>def forget_identity(self, subject_context):<DEDENT>
pass<EOL>
Forgets any remembered identity corresponding to the subject context
map being used to build a subject instance.

The context map is usually populated by a Subject.Builder
implementation.

See the SubjectFactory class constants for Shiro's known map keys.

:param subject_context: the contextual data, usually provided by a
                        Subject.Builder implementation, that
                        is being used to construct a Subject instance