public ActualImpl2(ISourceCodeHelper1 h1, SourceCodeHelper2 h2, SourceCodeHelper3?h3 = null)
{
_h1 = h1;
_h2 = h2;
}
// The implementor type can rely on its creator (here it has access to the AutoImpl1 and, as a nested type,
// it can access its private fields).
public ActualImpl1(AutoImpl1 theOwner, SourceCodeHelper1 h1, SourceCodeHelper2 h2)
{
_theOwner = theOwner;
_h1 = h1;
_h2 = h2;
}
