/// <summary>Merges this status with the given status. Merged statuses contain the most severe Disposition of either input status, as well as collated messages from both.</summary>
/// <param name="otherStatus">The message to attach</param>
/// <param name="key">(Optional) A string by which the message will be grouped</param>
/// <returns>The newly merged status</returns>
public ValidationStatus Merge(ValidationStatus otherStatus)
{
return(MergeAll(this, otherStatus));
}