静态函数
| AddFriend | Sends a friend request |
| DeleteFriend | Removes a friend |
| IsFriend | Judges whether a user is a friend |
| GetFriends | Gets the friend list |
| OpenNewFeedPanel | Opens the panel for creating feeds |
| CloseNewFeedPanel | Closes the panel for creating feeds |
| OpenFriendSharePanel | Opens the Friends Share panel |
| CloseFriendSharePanel | Closes the Friends Share panel |
| OpenSystemSharePanel | Opens the Share panel |
| CloseSystemSharePanel | Closes the Share panel |
| Chat | Opens a chat window to chat with the specified player |