TPSM82821A: ENEPG and NIPDAU electrolytic plating?

Part Number: TPSM82821A

Tool/software:

TPSM82821ASILR(NIPDAU)

TPSM82821SILR(ENEPIG)

ENEPIG also has the same component NIPDAU. Could you please tell me whether the plating of TPSM82821ASILR is electroless plating or electrolytic plating?