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