Returns the last time the application received a request or method invocation from the user associated
with this session. Application calls to this method do not affect this access time.
@return The time the user last interacted with the system.
@see #touch()
Returns the last time the application received a request or method invocation from the user associated with this session. Application calls to this method do not affect this access time.
@return The time the user last interacted with the system. @see #touch()