anchor.diff:  
   | link:{jdk-api}/java/util/function/Function.html[Function]
   | 
  -| 
  +| ✓
   | 
   | ✓
   
  
positive.code: 
  | link:{jdk-api}/java/util/function/Consumer.html[Consumer]
  | 
  | 
  | 
  | ✓
  
  
negative.code: 
  | link:{jdk-api}/java/util/function/BiFunction.html[BiFunction]
  | 
  | ✓
  | 
  | ✓
  
  