question: private Map < String , RamlResource > clean ( Map < String , RamlResource > publishedResources ) { Map < String , RamlResource > cleanedSet = new HashMap < > ( ) ; if ( publishedResources == null ) { return cleanedSet ; } for ( Entry < String , RamlResource > resource : publishedResources . entrySet ( ) ) { cleanedSet . put ( clean ( resource . getKey ( ) ) , resource . getValue ( ) ) ; } return cleanedSet ; }
target:  Cleans a set of strings removing special characters and reducing the string to lower case