Creates a new {@code SubjectContext} instance to be used to populate with subject contextual data that will then be sent to the {@code SecurityManager} to create a new {@code Subject} instance.
@return a new {@code SubjectContext} instance
See Implementation
Creates a new {@code SubjectContext} instance to be used to populate with subject contextual data that will then be sent to the {@code SecurityManager} to create a new {@code Subject} instance.
@return a new {@code SubjectContext} instance