public string UseItem(string[] args)
{
string characterName = args[0];
string itemName = args[1];
var character = party.FirstOrDefault(x => x.Name == characterName);
Validate.ValidateCharacter(character, characterName);
Item item = character.Bag.GetItem(itemName);
character.UseItem(item);
return(string.Format(OutputMessages.ItemUsed(), character.Name, itemName));
}