static [FSocialChatMessageRef](API\Plugins\Party\FSocialChatMessageRef) Create ( const [FString](API\Runtime\Core\Containers\FString) & InSourceName, const [FString](API\Runtime\Core\Containers\FString) & InMessageBody, [ESocialChannelType](API\Plugins\Party\Chat\ESocialChannelType) InSourceChannelType, [EChatSystemMessagePurpose](API\Plugins\Party\Chat\EChatSystemMessagePurpose) InPurpose )