diff --git a/client/service/src/builder.rs b/client/service/src/builder.rs
index 5237a6166b012..fe71e11945bb2 100644
--- a/client/service/src/builder.rs
+++ b/client/service/src/builder.rs
@@ -749,6 +749,7 @@ pub struct BuildNetworkParams<'a, TBl: BlockT, TExPool, TImpQu, TCl> {
 	/// Optional warp sync params.
 	pub warp_sync_params: Option<WarpSyncParams<TBl>>,
 }
+
 /// Build the network service, the network status sinks and an RPC sender.
 pub fn build_network<TBl, TExPool, TImpQu, TCl>(
 	params: BuildNetworkParams<TBl, TExPool, TImpQu, TCl>,
diff --git a/client/service/src/lib.rs b/client/service/src/lib.rs
index e658c7f7d9c71..4a896ecc87263 100644
--- a/client/service/src/lib.rs
+++ b/client/service/src/lib.rs
@@ -211,7 +211,7 @@ async fn build_network_future<
 }
 
 /// Builds a future that processes system RPC requests.
-async fn build_system_rpc_future<
+pub async fn build_system_rpc_future<
 	B: BlockT,
 	C: BlockchainEvents<B>
 		+ HeaderBackend<B>
@@ -421,6 +421,13 @@ pub struct TransactionPoolAdapter<C, P> {
 	client: Arc<C>,
 }
 
+impl<C, P> TransactionPoolAdapter<C, P> {
+	/// Constructs a new instance of [`TransactionPoolAdapter`].
+	pub fn new(pool: Arc<P>, client: Arc<C>) -> Self {
+		Self { pool, client }
+	}
+}
+
 /// Get transactions for propagation.
 ///
 /// Function extracted to simplify the test and prevent creating `ServiceFactory`.