
admin.databaseAddForeignReplicas( config as element(configuration), database-id as (Number|String), replicas as element(db.foreignReplica)[] ) as element(configuration)
This function adds one or more replica databases to the database replication configuration. This function must be executed on the master cluster.
http://marklogic.com/xdmp/privileges/admin/database
http://marklogic.com/xdmp/privileges/admin/database/{id}
http://marklogic.com/xdmp/privileges/admin/database/replication
http://marklogic.com/xdmp/privileges/admin/database/replication/{id}
  
  const admin = require('/MarkLogic/admin.xqy');
  const fdb = 7746794057802787479
  const cfg = admin.getConfiguration()
  const fcl = admin.clusterGetForeignClusterId(cfg, "ClusterA")
  const freplica = admin.databaseForeignReplica(fcl, fdb, fn.true(), 300)
  admin.databaseAddForeignReplicas(cfg, xdmp.database("NewDB"), freplica)
   //Adds the 'NewDB' database to the replica databases configuration. Use
   //admin.saveConfiguration to save the changes to the configuration or
   //pass the configuration to other Admin API functions to make other changes.