code: @Override
      public final EventData convert(final CommonEvent commonEvent) {
  
          // User's data
          final String dataType = commonEvent.getDataType().asBaseType();
          final SerializedDataType serUserDataType = new SerializedDataType(dataType);
          final Serializer userDataSerializer = serRegistry.getSerializer(serUserDataType);
          final byte[] serUserData = userDataSerializer.marshal(commonEvent.getData(), serUserDataType);
          final byte[] serData;
          if (userDataSerializer.getMimeType().matchEncoding(targetContentType)) {
              serData = serUserData;
          } else {
              final Base64Data base64data = new Base64Data(serUserData);
              final Serializer base64Serializer = serRegistry.getSerializer(Base64Data.SER_TYPE);
              serData = base64Serializer.marshal(base64data, Base64Data.SER_TYPE);
          }
  
          // EscMeta
          final EscMeta escMeta = EscSpiUtils.createEscMeta(serRegistry, targetContentType, commonEvent);
          final SerializedDataType escMetaType = new SerializedDataType(EscMeta.TYPE.asBaseType());
          final Serializer escMetaSerializer = getSerializer(escMetaType);
          final byte[] escSerMeta = escMetaSerializer.marshal(escMeta, escMetaType);
  
          // Create event data
          final EventData.Builder builder = EventData.newBuilder().eventId(commonEvent.getId().asBaseType())
                  .type(dataType);
          if (targetContentType.isJson()) {
              builder.jsonData(serData);
              builder.jsonMetadata(escSerMeta);
          } else {
              builder.data(serData);
              builder.metadata(escSerMeta);
          }
          return builder.build();
  
      }
docs: Converts a common event into event data.
  
  @param commonEvent
  Event to convert.
  
  @return Converted event as event data.