Predicate getRootXmlFile
Gets the “root” struts.xml file that we believe applies to this refType.
We guess by identifying the “nearest” struts.xml configuration file, i.e. the Struts
configuration file with the lowest common ancestor to this file.
Import path
import semmle.code.java.frameworks.struts.StrutsConventionsStrutsXmlFile getRootXmlFile(RefType refType)