src/vs/workbench/common/editor/diffEditorInput.ts/DiffEditorInput/toUntyped
class DiffEditorInput:	override toUntyped(group: GroupIdentifier | undefined, context: UntypedEditorContext): IResourceDiffEditorInput | undefined {
		const originalResourceEditorInput = this.secondary.toUntyped(group, context);
		const modifiedResourceEditorInput = this.primary.toUntyped(group, context);

		if (originalResourceEditorInput && modifiedResourceEditorInput) {
			return {
				label: this.name,
				description: this.description,
				originalInput: originalResourceEditorInput,
				modifiedInput: modifiedResourceEditorInput
			};
		}

		return undefined;
	}