How to use

setQ

method

in

com.google.api.services.gmail.Gmail$Users$Messages$List

/**
 * Returns an empty list if there is no unread email of the user.
 */
private List<Message> getListOfUnreadEmailOfUser() throws IOException {
  List<Message> messageStubs = service.users().messages().list(username).setQ("is:UNREAD").execute().getMessages();
  return messageStubs == null ? new ArrayList<>() : messageStubs;
}

    .messages()
    .list("me")
    .setQ(query)
    .execute();
LOGGER.fine("==Found "+ neverNull(response.getMessages()).size()+" messages.");

for (LocalMessage localMessage : localMessages) {
 gmail.users().messages().list(user.getEmailAddress())
   .setQ("rfc822msgid:" + localMessage.getMessageId())
   .setFields("messages(id)")
   .queue(batch, new JsonBatchCallback<ListMessagesResponse>() {