question: private void parseTrailerHeaders ( ) throws IOException { try { this . footers = AbstractMessageParser . parseHeaders ( in , - 1 , - 1 , null ) ; } catch ( HttpException e ) { IOException ioe = new MalformedChunkCodingException ( "Invalid footer: " + e . getMessage ( ) ) ; ExceptionUtils . initCause ( ioe , e ) ; throw ioe ; } }
target:  Reads and stores the Trailer headers.