in src/Epam.Kafka/KafkaConfigExtensions.cs [172:186]
internal static void ValidatePlaceholder(string key, string value)
{
Regex regex = RegexHelper.ConfigPlaceholderRegex;
if (key == null || !regex.IsMatch(key))
{
throw new ArgumentException($"Placeholder key '{key}' not match '{regex}'.", nameof(key));
}
if (value == null || regex.IsMatch(value))
{
throw new ArgumentException($"Placeholder value '{value}' for key {key} is null or match '{regex}'.",
nameof(value));
}
}