public async Task <ReadOnlyQuote> CreateQuote(string phrase, string attribution)
        {
            var currentTime = DateTimeOffset.UtcNow;

            var entity = new Quote
            {
                Phrase      = phrase,
                Attribution = attribution,
                CreatedAt   = currentTime,
                UpdatedAt   = currentTime
            };

            _dbContext.Quotes.Add(entity);

            await _dbContext.SaveChangesAsync();

            return(entity.AsReadOnly());
        }