public static SCode Make(PrimitiveIsFixnumEqualA predicate, SCode consequent, SCode alternative)
 {
     return
         (predicate is PrimitiveIsFixnumEqualA0) ? PCondIsFixnumEqualA0.Make ((PrimitiveIsFixnumEqualA0) predicate, consequent, alternative) :
         (predicate is PrimitiveIsFixnumEqualA1) ? PCondIsFixnumEqualA1.Make ((PrimitiveIsFixnumEqualA1) predicate, consequent, alternative) :
         (predicate is PrimitiveIsFixnumEqualAL) ? PCondIsFixnumEqualAL.Make ((PrimitiveIsFixnumEqualAL) predicate, consequent, alternative) :
         (predicate is PrimitiveIsFixnumEqualAQ) ? Unimplemented () :
         (consequent is LexicalVariable) ? Unimplemented():
         (consequent is Quotation) ? Unimplemented():
         (alternative is LexicalVariable) ? Unimplemented():
         (alternative is Quotation) ? Unimplemented ():
         new PCondIsFixnumEqualA (predicate, consequent, alternative);
 }
 protected PCondIsFixnumEqualA(PrimitiveIsFixnumEqualA predicate, SCode consequent, SCode alternative)
     : base(predicate, consequent, alternative)
 {
 }