41  *

    42  * Normally we eschew multiple inheritance, however, the classes 

    43  * PcapUserHelperForDevice and AsciiTraceUserHelperForDevice are

    44  * treated as "mixins".  A mixin is a self-contained class that

    45  * encapsulates a general attribute or a set of functionality that

    46  * may be of interest to many other classes.

    47  * 

    48  * Since the mixins below are self-contained and are explicitly 

    49  * designed to avoid naming conflicts through explicit resolution,

    50  * multiple inheritance problems are avoided.