This is a lot of repeat code.  Try something like this instead:

```java

  private void initListParams() {
    this.sourceIncludes = initListParam("sourceIncludes",this.sourceIncludes,ScansDirectory.DEFAULT_INCLUDES);
    this.sourceExcludes = initListParam("sourceExcludes",this.sourceExcludes,Collections.emptyList());
    this.specIncludes = initListParam("specIncludes",this.specIncludes,ScansDirectory.DEFAULT_INCLUDES);
    this.specExcludes = initListParam("specExcludes",this.specExcludes,Collections.emptyList());
  }

  private void initListParam(String name, List<String> list, List<String> default) {
    List<String> initializedList = Collections.isEmpty(list) ? default : list;
    this.getLog().debug(String.format("Running with the following value for parameter %s: %s",name,initializedList ));
    return initializedList;
  }
```

Also, looks like the indentation got messed up.  Check your formatting.