sample method not defined: OrderCancelRequest.get(ClearingAccount)

The example code on page http://www.quickfixj.org/quickfixj/usermanual/usage/receiving_messages.html in the section "Most Type Safe... DO THIS!" does not compile; the error message is

The method get(OrigClOrdID) in the type OrderCancelRequest is not applicable for the arguments (ClearingAccount)

This is noted in the sample code, i.e. "// compile time error!! field not defined for OrderCancelRequest", but there is no JIRA ticket on it.