muJSAssignOp':: JSAssignOp -> Expression
muJSAssignOp' (JSTimesAssign _)   = Primitive Multiply
muJSAssignOp':: JSAssignOp -> Expression
muJSAssignOp' (JSTimesAssign _)   = Primitive Multiply
muJSAssignOp' (JSTimesAssign _)   = Primitive Multiply