rengolin/HPCC-Platform — comment on commit 6093b50c42cc953029d3009e059c7622118a971f
File: sourcedoc.xml line 652
By ghalliday:

Quite often you have
CFool : public CInterface, implements IFoo;
CWarmFoo : public CFoo;
CCoolFoo : public CFoo
rather than e-implementing the interface.