operator [] method

MimeMessage operator [](
  1. int messageIndex
)

Retrieves the message for the given messageIndex.

Note that the messageIndex is expected to be based on full messageSequence, where index 0 is newest message and size-1 is the oldest message. Compare isAvailable

Implementation

MimeMessage operator [](int messageIndex) {
  final index = (messages.length - messageIndex - 1);
  if (index < 0) {
    throw RangeError(
        'for messageIndex $messageIndex in a result with the length $length and currently loaded message count of ${messages.length}');
  }
  return messages[index];
}