code: public String findAdminPort() {
  
          String qbitAdminPort = System.getenv("QBIT_ADMIN_PORT");
  
          if (Str.isEmpty(qbitAdminPort)) {
              qbitAdminPort = System.getenv("ADMIN_PORT");
          }
  
          /* Uses PORT1 for admin port for Mesosphere / Heroku like environments. */
          if (Str.isEmpty(qbitAdminPort)) {
              qbitAdminPort = System.getenv("PORT1");
          }
          return qbitAdminPort;
      }
docs: Finds the admin port.
  Searches  under environment variables,
  {@code QBIT_ADMIN_PORT}, {@code ADMIN_PORT}, {@code PORT1}.
  
  @return admin port