question: public PlaceholderReplacer ( String searchString , String replacementString ) { this . source = "(dummy)" ; Map < String , Integer > placeholderNameToIndex = Maps . newHashMap ( ) ; this . searchPattern = createPattern ( searchString , placeholderNameToIndex ) ; this . replacement = createReplace ( replacementString , placeholderNameToIndex ) ; }
target:  A lightweight way to try this class without the need to create files.