
sec.roleAddRoles( role-name as String, new-roles as String[] ) as null
  Adds new roles ($new-roles) to the role specified by
  $role-name.
  If a role with name equal to $role-name is not found, an error is 
  returned.
 
  If one of $new-roles does not correspond to an existing role, 
  an error is returned.
  If the current user is limited to granting only his/her roles,
  and $new-role is not a subset of the current user's roles, then an error is
  returned. 
 
  
| Parameters | |
|---|---|
| role-name | The name of the role. | 
| new-roles | The roles to add to the role. | 
http://marklogic.com/xdmp/privileges/role-add-roles http://marklogic.com/xdmp/privileges/grant-all-roles orhttp://marklogic.com/xdmp/privileges/grant-my-roles
  This function must be executed against the security database.
// execute this against the security database
declareUpdate();   
const sec = require('/MarkLogic/security.xqy');
sec.roleAddRoles("Contractor", "filesystem-access")
// Adds the "filesystem-access" role to the "Contractor" role and leaves
   any previously assigned roles intact.