How to instruct pitest to skip some methods.

[Kevin Patel]

Hii 

I am Kevin. 

Is there any way to skip some methods in Pitest? 
For example:- 

```

public Set<DetailAST> getMethodCalls() { return Collections.unmodifiableSet(methodCalls); }

``` 

The code is mutated as 

```

public Set<DetailAST> getMethodCalls() { return methodCalls;

}

```

How can we instruct Pitest to not mutate Collections.unmodifiableSet? 

[henry]

You can use the `avoidCallsTo` parameter to provide a list of methods where no mutants should be created on the line on which they are called. By default this is set to a list of common logging methods, but you can redefine it to include `java.util.Collections.unmodifiableSet`.

If you don't want to avoid every instance of unmodifiableSet, you could use the Arcmutate exclusions functionality to avoid individual lines.

https://docs.arcmutate.com/docs/exclusions.html

Henry