Function rest_token_service_get_total_issued_supply 

async fn rest_token_service_get_total_issued_supply<S>(
    __arg0: State<Arc<S>>,
    headers: HeaderMap,
    __arg2: Query<GetTotalIssuedSupplyRequest>,
) -> Result<Json<TotalIssuedSupplyResponse>, RestError>
where
    S: TokenService + Send + Sync + 'static,

GetTotalIssuedSupply - JSON endpoint.

GET /v2/token/total-issued-supply