/// <summary>
/// Opens or resumes a direct message or multi-person direct message.
/// </summary>
public Task <OpenedConversationResponse> OpenAsync(ConversationToOpen conversationToOpen)
=> SendPostFormUrlEncodedAsync <ConversationToOpen, OpenedConversationResponse>("open", conversationToOpen);
/// <inheritdoc cref="ConversationsClient.OpenAsync(ConversationToOpen)"/> public Task <OpenedConversationResponse> OpenConversationAsync(ConversationToOpen conversationToOpen) => Conversations.OpenAsync(conversationToOpen);