sb.append(cause.getClass().getName());
            } else {
                sb.append(cause.getMessage());
            }
            try (final StringWriter sw = new StringWriter(); final PrintWriter pw = new PrintWriter(sw)) {
                cause.printStackTrace(pw);
                pw.flush();
                sb.append(" [ ").append(sw.toString()).append(" ]");

    // TODO(cgdecker): Add CharSource.slice?
    StringBuilder builder = new StringBuilder();
    Reader reader = concatenated.openStream(); // no need to worry about closing
    for (int i = 0; i < 8; i++) {
      builder.append((char) reader.read());
    }
    assertEquals(expected, builder.toString());
  }

  static final CharSource BROKEN_READ_SOURCE = new TestCharSource("ABC", READ_THROWS);

      buildString {
        if (noCache) append("no-cache, ")
        if (noStore) append("no-store, ")
        if (maxAgeSeconds != -1) append("max-age=").append(maxAgeSeconds).append(", ")
        if (sMaxAgeSeconds != -1) append("s-maxage=").append(sMaxAgeSeconds).append(", ")
        if (isPrivate) append("private, ")
        if (isPublic) append("public, ")
        if (mustRevalidate) append("must-revalidate, ")

        StringBuilder sb = new StringBuilder();
        sb.append(dm).append(boostExpr);
        sb.append(dm).append(createdBy);
        sb.append(dm).append(createdTime);
        sb.append(dm).append(sortOrder);
        sb.append(dm).append(updatedBy);
        sb.append(dm).append(updatedTime);
        sb.append(dm).append(urlExpr);
        if (sb.length() > dm.length()) {
            sb.delete(0, dm.length());

        buf.append(code);
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final String language = DocumentUtil.getValue(doc, fessConfig.getIndexFieldLang(), String.class);
        if (StringUtil.isNotBlank(language)) {
            for (final String f : langFields) {
                buf.append(";ctx._source.").append(f).append('_').append(language).append("=ctx._source.").append(f);
            }

                queryBuf.append('&');
                queryBuf.append(URLUtil.encode(entry.getValue(), Constants.UTF_8));
                queryBuf.append('=');
                queryBuf.append(URLUtil.encode(entry.getKey(), Constants.UTF_8));
                formBuf.append("<input type=\"hidden\" name=\"");
                formBuf.append(StringEscapeUtils.escapeHtml4(entry.getValue()));

        final StringBuilder buf = new StringBuilder(100);
        buf.append("WEB-INF");
        buf.append(File.separator);
        buf.append("env");
        buf.append(File.separator);
        buf.append(getExecuteType());
        buf.append(File.separator);
        buf.append("resources");
        buf.append(File.separator);
        buf.append(filename.replaceAll("\\.\\.+", ""));
        return buf.toString();
    }

      }
      throw new AssertionError();
    }

    @Override
    void describeAsLowerBound(StringBuilder sb) {
      sb.append('[').append(endpoint);
    }

    @Override
    void describeAsUpperBound(StringBuilder sb) {
      sb.append(endpoint).append(')');
    }

    @Override
    C leastValueAbove(DiscreteDomain<C> domain) {
      return endpoint;
    }

    @Override

        final StringBuilder buf = new StringBuilder(100);
        buf.append(methodName).append("(");
        if (argTypes != null && argTypes.length > 0) {
            for (final Class<?> argType : argTypes) {
                buf.append(argType.getName()).append(", ");
            }
            buf.setLength(buf.length() - 2);
        }
        buf.append(")");
        return new String(buf);
    }

    /**

                return tempBuf.toString();
            }).collect(Collectors.joining(","));
            buf.append(hotThreads).append(',');
        } catch (final Exception e) {
            appendException(buf, e).append(',');
        }

        appendTimestamp(buf);
        buf.append('}');

        if (logger.isInfoEnabled()) {
            logger.info(buf.toString());
        }
    }