}
                    if ( res == null ) {
                        res = r.combine(next);
                    }
                    else {
                        res.append(r.combine(next));
                    }
                }
                while ( next != nextstart );
            }
        }
        while ( r != start );

        if ( res != null ) {
            return res;
        }

    /**
     * @return
     */
    static Map<String, String> toMap ( Properties props ) {
        Map<String, String> res = new HashMap<>();
        for ( Object object : props.keySet() ) {
            res.put((String) object, props.getProperty((String) object).trim());
        }
        return res;
    }

                e = i - 4;
                break;
            }
        }

        StackTraceElement[] res = new StackTraceElement[e - s];
        System.arraycopy(stackTrace, s, res, 0, e - s);
        return res;
    }


    /**
     * {@inheritDoc}
     *
     * @see java.lang.Object#finalize()
     */
    @Override