Method describe

src/ExtMsg.actor.cpp:706–706

	    : indexObj(indexObj), build_id(build_id), ns(ns) {}

	std::string describe() override { return "IndexInsert(" + indexObj.toString() + ")"; }

	ACTOR static Future<Reference<IReadWriteContext>> indexInsertActor(ExtIndexInsert* self,
	                                                                   Reference<CollectionContext> cx) {