anchor.diff:  
   assertThat( path.hasNext() ).isFalse();
   ----
  +
  +1. Revisit the names of nodes of kind `TYPE_ARGUMENT`;
  +instead of `<iterable element>`, `<map value>` etc. should it be the names of the type parameters in question, i.e. `<E>`, `<V>` etc.?
  
positive.code: 		this.columnKey = columnKey;
  	}
  
  	@Override
  	public String toString() {
  		return "(" + rowKey + "," + columnKey + ")";
  	}
  
  	// equals(), hashCode() ...
  }
  ----
  
negative.code: [source,java]
  ----
  ConstraintViolation<Customer> violation = ...;
  
  Iterator<Node> path = violation.getPropertyPath().iterator();
  
  