anchor.diff:  credentials are used for different servers (which is not recommended).
   
   A single realm declaration defines a name for the realm, the authentication
  -mechanism to be used, and additional meta data that depends on the concrete
  +mechanism to be used, and additional metadata that depends on the concrete
   authentication mechanism. Currently, the following mechanisms are supported:
   
   .Supported authentication mechanisms
  
positive.code: </oauth-config>
  ----
  
  === Basic meta data
  
  The properties of this category define the basic parameters of the HTTP
  archive, such as its URL or its name. The following properties are supported:
  
negative.code: declaration of a _basic_ realm with this name is created automatically.
  
  The declaration of a realm of type _oauth_ is more complex as it requires some
  additional metadata:
  
  [source,xml]
  ----
  