@Override
            protected void writeValueTo(Output output, int fieldNumber,
                    V value, boolean repeated) throws IOException
            {
                RuntimeCollectionField.this.writeValueTo(output, fieldNumber,
                        value, repeated);
            }
Since we cannot inherit multiple classes, we create this Collection schema simply to delegate to the wrapping
class' abstract methods.
protostuff-runtime/src/main/java/io/protostuff/runtime/RuntimeCollectionField.java