CLASS clz net/minecraft/world/loot/condition/KilledByPlayerLootCondition CLASS clz$a Factory METHOD a toJson (Lcom/google/gson/JsonObject;Lclw;Lcom/google/gson/JsonSerializationContext;)V METHOD b fromJson (Lcom/google/gson/JsonObject;Lcom/google/gson/JsonDeserializationContext;)Lclw; FIELD a INSTANCE Lclz; METHOD a getRequiredParameters ()Ljava/util/Set;