Sets the SecurityManager instance that should be used to back the constructed {@link Subject} instance
(typically used to support {@link hunt.shiro.subject.support.DelegatingSubject DelegatingSubject} implementations).
@param securityManager the SecurityManager instance that should be used to back the constructed {@link Subject}
instance.
Sets the SecurityManager instance that should be used to back the constructed {@link Subject} instance (typically used to support {@link hunt.shiro.subject.support.DelegatingSubject DelegatingSubject} implementations).
@param securityManager the SecurityManager instance that should be used to back the constructed {@link Subject} instance.