Searching for subcustomers of a customer

I'm trying to write what I thought would be a simple search that will return all of the subcustomers of a given customer. I'm trying to get my feet wet with the following Java sample code from page 91 of the Platform Guide. I'm using the 2.0 wsdl, and the Platform Guide document I'm reading also says it's for 2.0.

RecordRef[] rr = new RecordRef[] {new RecordRef("1", Recordtype.customer), new RecordRef("2", RecordType.customer), new RecordRef("3", RecordType.customer)};  CustomerSearchBasic customerSearchBasic = new CustomerSearchBasic();  customerSearchBasic.setInternalId(new SearchMultiSelectField(rr, SearchMultiSelectFieldOperator.anyOf));

When I try to run this code, it complains about my trying to pass a SearchMultiSelectField object to the setInternalId method. Looking at the java source generated by Axis 1.2 wsdl2java, it does look like the setInternalId method for CustomerSearchBasic is supposed to accept a SearchMultiSelectField object as a parameter. Here is the code snippet from the generated CustomerSearchBasic.java file: