private Collection<XQueryFile> getFilesFromImportWithMatchingNamespacePrefix(XQueryFile file) {
   return file.getImportedFilesThatExist(
       new Condition<XQueryModuleImport>() {
         @Override
         public boolean value(XQueryModuleImport moduleImport) {
           String namespacePrefix = myElement.getVarName().getVarNamespace().getText();
           return namespacePrefix.equals(moduleImport.getNamespaceName().getText());
         }
       });
 }