eHandler(android.os.Looper,android.os.Handler.Callback)"><code>Handler</code></a> created from
 this clock are governed by the clock's time. Messages sent through these handlers are not
 triggered until previous messages on any thread have been handled to ensure deterministic
 execution. Note that this includes messages sent from the main Robolectric test thread, meaning
 that these messages are only triggered if the main test thread is idle, which can be explicitly
 requested by calling <code>ShadowLooper.