Returns the backing context used to build the {@code Subject} instance, available to subclasses
since the {@code context} class attribute is marked as {@code private}.
@return the backing context used to build the {@code Subject} instance, available to subclasses.
Returns the backing context used to build the {@code Subject} instance, available to subclasses since the {@code context} class attribute is marked as {@code private}.
@return the backing context used to build the {@code Subject} instance, available to subclasses.