Function rest_node_service_get_block_reward 

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

GetBlockReward - JSON endpoint.

GET /v2/node/block-reward