Serialize the {@link PDMDefinition} to an existing byte array

C# |
public virtual int toBytes( PDMSerializer ser, byte[] ba, int pos )

- ser (PDMSerializer)
- the PDMSerializer to use
- ba (array< Byte >[]()[])
- the byte array to serialize into
- pos (Int32)
- the position to start at in the byte array

the updated position after serializing this object