anchor.diff:          ...
       ...
   ----------------------------------------
  +<1> Specifies the type of realm (for example, `native`, `ldap`,
  +`active_directory`, `pki`, `file`, `kerberos`, `saml`) and the realm name. This
  +information is required.
   
   The valid settings vary depending on the realm type. For more
   information, see <<setting-up-authentication>>.
  
positive.code: ----------------------------------------
  xpack.security.authc.realms:
  
      native.realm1:
          order: 0
          ...
  
  
negative.code: [float]
  [[ref-realm-settings]]
  ===== Settings valid for all realms
  
  `order`::
  The priority of the realm within the realm chain. Realms with a lower order are
  