public static SCode Make(PrimitiveIsFixnumEqualA0A predicate, SCode consequent, SCode alternative)
 {
     return
         //(predicate is PrimitiveIsFixnumEqualA0A0) ? Unimplemented() :
         (predicate is PrimitiveIsFixnumEqualA0A1) ? PCondIsFixnumEqualA0A1.Make ((PrimitiveIsFixnumEqualA0A1) predicate, consequent, alternative) :
         (consequent is LexicalVariable) ? Unimplemented () :
         (consequent is Quotation) ? Unimplemented () :
         (alternative is LexicalVariable) ? Unimplemented () :
         (alternative is Quotation) ? Unimplemented () :
         new PCondIsFixnumEqualA0A (predicate, consequent, alternative);
 }
 protected PCondIsFixnumEqualA0A(PrimitiveIsFixnumEqualA0A predicate, SCode consequent, SCode alternative)
     : base(predicate, consequent, alternative)
 {
 }