/guava/guava/src/com/google/common/io/CharSource.java
closer.register( ) ;
closer.close ( ) ;
try { Reader reader = closer.register(openStream()); return CharStreams.toString(reader); } catch (Throwable e) { throw closer.rethrow(e); } finally { <extra_id_0> } } @CheckForNull public String readFirstLine() throws IOException { Closer closer = Closer.create(); try {