anchor.diff:  limitations under the License.
   -->
   
  -A client is authenticated when it connects, with valid credentials, to a <%=vars.product_name%> cache server that is configured with the client `Authenticator` callback.
  +A client is authenticated when it connects with valid credentials to a <%=vars.product_name%> cache server that is configured with the client `Authenticator` callback.
  +For details on the server's role in authentication and what it expects from the client, see [Implementing Authentication](geodeman/managing/security/implementing_authentication.html) in the *<%=vars.product_name%> User Guide*.
   
   Examples of various implementations can be found in the Native Client source distribution's `../templates/security` directory.
  -
  -An `AuthenticationRequiredException` is thrown when the server is configured with security and the
  -client does not present its credentials while attempting to connect.
   
   In your application, authentication credentials must be set when creating the cache. In practice,
   this means setting the authentication credentials when you create the CacheFactory.
  
positive.code: In this C++ authentication example, credentials are implemented in the getCredentials member function of the AuthInitialize abstract class.
  
  ```cpp
  #include <iostream>
  
  #include <geode/CacheFactory.hpp>
  #include <geode/PoolManager.hpp>
  #include <geode/RegionFactory.hpp>
  #include <geode/RegionShortcut.hpp>
  #include <geode/AuthInitialize.hpp>
  
  using namespace apache::geode::client;
  
  constexpr auto SECURITY_USERNAME = "security-username";
  constexpr auto SECURITY_PASSWORD = "security-password";
  
  class UserPasswordAuthInit : public AuthInitialize {
  public:
    UserPasswordAuthInit() = default;
  
negative.code: 
  
  ```cs
    class ExampleAuthInitialize : IAuthInitialize
    {
      public ExampleAuthInitialize()
      {
        // TODO initialize your resources here
        Console.Out.WriteLine("ExampleAuthInitialize::ExampleAuthInitialize called");
      }
  
      public void Close()
      {
        // TODO close your resources here
        Console.Out.WriteLine("ExampleAuthInitialize::Close called");
      }
  
      public Properties<string, object> GetCredentials(Properties<string, string> props, string server)
      {
        // TODO get your username and password
        Console.Out.WriteLine("ExampleAuthInitialize::GetCredentials called");
  
        var credentials = new Properties<string, object>();
        credentials.Insert("security-username", "root");
        credentials.Insert("security-password", "root");
        return credentials;
      }
    }
  
  ```
  
  