/// <summary>
/// Add a comment to an existing file.
/// <see href="https://api.slack.com/methods/files.comments.add" />
/// </summary>
/// <param name='operations'>
/// The operations group for this extension method.
/// </param>
/// <param name='token'>
/// Authentication token. Requires scope: `files:write:user`
/// </param>
/// <param name='comment'>
/// Text of the comment to add.
/// </param>
/// <param name='file'>
/// File to add a comment to.
/// </param>
public static AddOKResponse Add(this IFiles operations, string token = default(string), string comment = default(string), string file = default(string))
{
return(operations.AddAsync(token, comment, file).GetAwaiter().GetResult());
}