/**
* Asserts that the state of this instance will remain consistent if a specific
* <tt>MediaDirection</tt> (i.e. <tt>direction</tt>) and a <tt>MediaDevice</tt> with a specific
* <tt>MediaDirection</tt> (i.e. <tt>deviceDirection</tt>) are both set on this instance.
*
* @param direction the <tt>MediaDirection</tt> to validate against the specified
* <tt>deviceDirection</tt>
* @param deviceDirection the <tt>MediaDirection</tt> of a <tt>MediaDevice</tt> to validate
* against the specified <tt>direction</tt>
* @param illegalArgumentExceptionMessage the message of the <tt>IllegalArgumentException</tt> to
* be thrown if the state of this instance would've been compromised if <tt>direction</tt> and
* the <tt>MediaDevice</tt> associated with <tt>deviceDirection</tt> were both set on this
* instance
* @throws IllegalArgumentException if the state of this instance would've been compromised were
* both <tt>direction</tt> and the <tt>MediaDevice</tt> associated with
* <tt>deviceDirection</tt> set on this instance
*/
protected void assertDirection(
MediaDirection direction,
MediaDirection deviceDirection,
String illegalArgumentExceptionMessage)
throws IllegalArgumentException {
if ((direction != null) && !direction.and(deviceDirection).equals(direction))
throw new IllegalArgumentException(illegalArgumentExceptionMessage);
}
