/src/main/java/net/finmath/montecarlo/automaticdifferentiation/backward/alternative/RandomVariableAAD.java
resultrandomvariable = X.addProduct( Y,Z) ;resultrandomvariable = X.sub( Y) ;
resultrandomvariable = X.sub ( Y ) ;
Y = aadRandomVariables[1].getRandomVariableInterface(); switch(operator){ case ADD: resultrandomvariable = X.add(Y); break; case SUB: <extra_id_0> break; case MULT: resultrandomvariable = X.mult(Y); break; case DIV: resultrandomvariable = X.div(Y);