Ptg[] asts = fp.getRPNPtg();
assertEquals(9, asts.length);
IntPtg op1 = (IntPtg) asts[0];
IntPtg op2 = (IntPtg) asts[1];
EqualPtg eq = (EqualPtg) asts[2];
AttrPtg ifPtg = (AttrPtg) asts[3];
IntPtg res1 = (IntPtg) asts[4];
AttrPtg ptgGoto= (AttrPtg) asts[5];
assertEquals("Goto 1 Length", (short)10, ptgGoto.getData());