src/vs/workbench/api/browser/mainThreadLanguageFeatures.ts/MainThreadLanguageFeatures/$resolveDocumentOnDropFileData
class MainThreadLanguageFeatures:	async $resolveDocumentOnDropFileData(handle: number, requestId: number, dataIndex: number): Promise<VSBuffer> {
		const provider = this._documentOnDropEditProviders.get(handle);
		if (!provider) {
			throw new Error('Could not find provider');
		}
		return provider.resolveDocumentOnDropFileData(requestId, dataIndex);
	}