fetchMessage method
Fetches a single message by the given definition.
messageSequenceId the message sequence ID of the desired message
fetchContentDefinition the definition of what should be fetched from the message, for example (UID ENVELOPE HEADER[]), BODY[] or ENVELOPE, etc
Implementation
Future<FetchImapResult> fetchMessage(
int messageSequenceId, String fetchContentDefinition) {
return fetchMessages(
MessageSequence.fromId(messageSequenceId), fetchContentDefinition);
}