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