private DataType createArrayType(int id, DocumentmanagerConfig.Datatype.Arraytype array) {
            DataType nestedType = getOrCreateType(array.datatype());
            ArrayDataType type = new ArrayDataType(nestedType, id);
            inProgress(type);
            return type;
        }
One-shot configuration; should be called on a newly constructed manager
document/src/main/java/com/yahoo/document/DocumentTypeManagerConfigurer.java