Can REST API return more than 15 results for autocomplete suggestions?

[uidev]

According to the docs, there is no "maxResults" parameter for this endpoint:

https://docs.atlassian.com/software/jira/docs/api/REST/8.5.15/#api/2/jql/autocompletedata-getFieldAutoCompleteForQueryString

However, when I run it my results are always truncated to just 15! How can I retrieve every single result if this endpoint doesn't support pagination? Is this a dead end?

I need an efficient endpoint that retrieves all of the possible labels with a certain prefix. This endpoint was perfect for that, until I had more than 15 labels with a certain prefix!

[annag]

Maybe this will help? https://community.atlassian.com/t5/Jira-Software-questions/Increasing-Output-from-REST-API/qaq-p/1433398