anchor.diff:  
   * Same as Example 4
   * You can cancel the submit processing
  -* The model has a classic "blocking" API
  +* The Model has a classic "blocking" API
   
   image::example5.png[]
   
  
positive.code: link:./src/main/java/ch/petikoch/examples/mvvm_rxjava/example7a[]
  
  * Same as example 7
  * But: The model's log Observable sometimes fail
  * We add some exception handling into the viewmodel, to keey the view alive
  
  image::example7a.png[]
  
  
negative.code: 
  link:./src/test/groovy/ch/petikoch/examples/mvvm_rxjava/example6[]
  
  === Example 6a: Form submit with exceptions in Model (backend) calls
  
  link:./src/main/java/ch/petikoch/examples/mvvm_rxjava/example6a[]
  
  * Same as Example 6
  * But like in real world, there are sometimes exceptions during e.g. Model (backend) method calls
  * How to handle them?
  
  This is of course a challenging task: +
  