Function rest_node_service_get_transaction_count 

async fn rest_node_service_get_transaction_count<S>(
    __arg0: State<Arc<S>>,
    headers: HeaderMap,
    __arg2: Query<GetTransactionCountRequest>,
) -> Result<Json<TransactionCountResponse>, RestError>
where
    S: NodeService + Send + Sync + 'static,

GetTransactionCount - JSON endpoint.

GET /v2/node/transaction-count