if (beresp.http.content-type ~ "json") {
set beresp.http.x-analysis = 1;
set beresp.http.x-analysis-backend = bereq.http.x-analysis-backend;
if (beresp.http.content-type ~ "json") {
set beresp.http.x-analysis = 1;
set beresp.http.x-analysis-backend = bereq.http.x-analysis-backend;