question: @ Override public void parse ( Reader reader , String baseURI ) throws IOException , RDFParseException , RDFHandlerException { if ( reader == null ) { throw new IllegalArgumentException ( "Reader cannot be 'null'" ) ; } if ( baseURI == null ) { throw new IllegalArgumentException ( "Base URI cannot be 'null'" ) ; } InputSource inputSource = new InputSource ( reader ) ; inputSource . setSystemId ( baseURI ) ; parse ( inputSource ) ; }
target:  Parses the data from the supplied Reader, using the supplied baseURI to resolve any relative URI references.