src/vs/editor/contrib/inlayHints/browser/inlayHintsController.ts/InlayHintsController/_getInlineHintsForRange
class InlayHintsController:	private _getInlineHintsForRange(range: Range) {
		const lineHints = new Set<InlayHintItem>();
		for (const data of this._decorationsMetadata.values()) {
			if (range.containsRange(data.item.anchor.range)) {
				lineHints.add(data.item);
			}
		}
		return Array.from(lineHints);
	}