src/vs/workbench/api/common/extHostLanguageFeatures.ts/InlayHintsAdapter/_isValidInlayHint
class InlayHintsAdapter:	private _isValidInlayHint(hint: vscode.InlayHint, range?: vscode.Range): boolean {
		if (hint.label.length === 0 || Array.isArray(hint.label) && hint.label.every(part => part.value.length === 0)) {
			console.log('INVALID inlay hint, empty label', hint);
			return false;
		}
		if (range && !range.contains(hint.position)) {
			// console.log('INVALID inlay hint, position outside range', range, hint);
			return false;
		}
		return true;
	}