code: private String[] requiredLibraries() {
          List<String> libraries = new ArrayList<String>(Arrays.asList(
              "org.dbunit",
              "org.apache.commons",
              "org.apache.log4j",
              "org.slf4j",
              "org.yaml",
              "org.codehaus.jackson"
          ));
  
          if (!dbunitConfigurationInstance.get().isExcludePoi()) {
              libraries.add("org.apache.poi");
          }
  
          return libraries.toArray(new String[libraries.size()]);
      }
docs: Private helper methods