anchor.diff:  }
   ----
   
  -=== Don't forget the component representation
  +=== Component representation
   
   Each component must have its own icon:
   
  
positive.code: }
  ----
  
  If you break a configuration entry in a later version ensure to:
  
  1. upgrade the version
  2. support a migration of the configuration
  
  [source,java]
  ----
  
negative.code: }
  ----
  
  You can also define a Validable class and use it to validate a form by setting it on your whole configuration:
  
  [source,java]
  ----
  // Note: some parts of the API were removed for clarity
  
  public class MyConfiguration {
  
  