
flexrep.configurationTargetGetExternalUser( cfg as element(flexrep.configuration), target-id as (Number|String) ) as element(extusr.externalUser)?
This function returns the external user information for a target, if any exists.
    There is no corresponding set function because the external user information is automatically
    added by 
    
    configurationTargetSetUserId
  
| Parameters | |
|---|---|
| cfg | The replication configuration. | 
| target-id | The target ID. | 
const flexrep = require('/MarkLogic/flexrep');
  // Obtain the domain ID from the database used by the Master to enable CPF.
  const domain = xdmp.eval(
    'const dom = require("/MarkLogic/cpf/domains");' +
      'fn.data(dom.get("Default Master").xpath("//dom:domain-id"));',
       null,
         {
          'database' : xdmp.database('Triggers')
         });
  const cfg = flexrep.configurationGet(domain, true); 
  const targetId = flexrep.configurationTargetGetId(cfg, 'Replica');
  flexrep.configurationTargetGetExternalUser(cfg, targetId);
  // Returns external user information for a target.