message: java core: Use Uint writes in SimpleBinaryWriter.
diff: @@ -74,16 +74,16 @@ public final class SimpleBinaryWriter implements ProtocolWriter {
  writeInt64((Long) metadata.getDefaultValue());
  break;
  case BondDataType.Values.BT_UINT8:
  - writeInt8((Byte) metadata.getDefaultValue());
  + writeUInt8((Byte) metadata.getDefaultValue());
  break;
  case BondDataType.Values.BT_UINT16:
  - writeInt16((Short) metadata.getDefaultValue());
  + writeUInt16((Short) metadata.getDefaultValue());
  break;
  case BondDataType.Values.BT_UINT32:
  - writeInt32((Integer) metadata.getDefaultValue());
  + writeUInt32((Integer) metadata.getDefaultValue());
  break;
  case BondDataType.Values.BT_UINT64:
  - writeInt64((Long) metadata.getDefaultValue());
  + writeUInt64((Long) metadata.getDefaultValue());
  break;
  case BondDataType.Values.BT_FLOAT:
  writeFloat((Float) metadata.getDefaultValue());
  