/// <summary>
/// Sends a Who Was query to server for the user.
/// </summary>
/// <param name="entriesCount">
/// The maximum number of entries that the server should return. A negative number
/// specifies an unlimited number of entries.
/// </param>
public void WhoWas(int entriesCount = -1)
{
client.QueryWhoWas(new[] { nickName }, entriesCount);
}