 using either the default constructor
or - if arguments are provided - the appropriate constructor for those
arguments.

<p>The <b>sourceName</b> argument represents the name of the source used
to provide test cases. It has the following characteristics:
<ul>
<li>It may be a field, property or method.
<li>It may be either an instance or a static member.
<li>It must return an IEnumerable or a type that implements IEnumerable.
<li>The individual items returned by the enumerator must be compatible
    with the