scheduleDocumentHighlightsRefresh method
Schedules a document highlights refresh with debouncing.
Cancels any pending refresh and schedules a new one.
Implementation
void scheduleDocumentHighlightsRefresh(int line, int character) {
_documentHighlightTimer?.cancel();
_documentHighlightTimer = Timer(_documentHighlightDebounce, () {
fetchDocumentHighlights(line, character);
});
}