NONE
NONE: "ADDITIONAL_TYPE_NONE"
PGC
PGC: "ADDITIONAL_TYPE_PGC"
GOODS
GOODS: "ADDITIONAL_TYPE_GOODS"
VOTE
VOTE: "ADDITIONAL_TYPE_VOTE"
COMMON
COMMON: "ADDITIONAL_TYPE_COMMON"
MATCH
MATCH: "ADDITIONAL_TYPE_MATCH"
UP_RCMD
UP_RCMD: "ADDITIONAL_TYPE_UP_RCMD"
UGC
UGC: "ADDITIONAL_TYPE_UGC"
RESERVE
RESERVE: "ADDITIONAL_TYPE_RESERVE"
UPOWER_LOTTERY
UPOWER_LOTTERY: "ADDITIONAL_TYPE_UPOWER_LOTTERY"
相关内容卡片类型枚举 用于标识动态中附加的相关内容卡片的类型