}
  }

  @Override
  public Writer append(char c) throws IOException {
    checkNotClosed();
    target.append(c);
    return this;
  }

  @Override
  public Writer append(@Nullable CharSequence charSeq) throws IOException {
    checkNotClosed();
    target.append(charSeq);
    return this;
  }

  @Override

        StringBuilder sb = new StringBuilder();
        sb.append(dm).append(createdTime);
        sb.append(dm).append(expiredTime);
        sb.append(dm).append(name);
        sb.append(dm).append(sessionId);
        if (sb.length() > dm.length()) {
            sb.delete(0, dm.length());
        }
        sb.insert(0, "{").append("}");
        return sb.toString();
    }

        StringBuilder sb = new StringBuilder();
        sb.append(dm).append(crawlingInfoId);
        sb.append(dm).append(createdTime);
        sb.append(dm).append(key);
        sb.append(dm).append(value);
        if (sb.length() > dm.length()) {
            sb.delete(0, dm.length());
        }
        sb.insert(0, "{").append("}");
        return sb.toString();
    }

            if (values == null) {
                // nothing
            } else if (values.length == 1) {
                queryBuf.append(' ').append(key).append(":\"").append(values[0]).append('\"');
            } else if (values.length > 1) {
                boolean first = true;
                queryBuf.append(" (");
                for (final String value : values) {
                    if (first) {
                        first = false;

        monitorTarget.append(buf, "key1", () -> "value1");
        buf.append(",");
        monitorTarget.append(buf, "key2", () -> 123);
        buf.append(",");
        monitorTarget.append(buf, "key3", () -> null);

        assertEquals("\"key1\":\"value1\",\"key2\":123,\"key3\":null", buf.toString());
    }

    // Test append with empty string
    public void test_append_emptyString() {

        StringBuilder hashString = new StringBuilder(128);
        hashString.append(md.groupId).append('|');
        hashString.append(md.artifactId).append('|');

        if (compareVersion) {
            hashString.append(md.version).append('|');
        }

        if (compareScope) {
            hashString.append(md.getArtifactScope()).append('|');
        }

        return hashString.toString().hashCode();
    }

        StringBuilder sb = new StringBuilder(256);
        sb.append("[scope=").append(scope.getScope());
        if (classpath != null) {
            for (ArtifactMetadata md : classpath) {
                sb.append(": ")
                        .append(md.toString())
                        .append('{')
                        .append(md.getArtifactUri())
                        .append('}');
            }
        }

    @Override
    public String toString() {
        final StringBuilder sb = new StringBuilder();
        sb.append(DfTypeUtil.toClassTitle(this));
        sb.append(":{useTimeZoneHandling=").append(isUseTimeZoneHandling());
        sb.append(", acceptCookieTimeZone=").append(isAcceptCookieTimeZone());
        sb.append("}@").append(Integer.toHexString(hashCode()));
        return sb.toString();
    }

        StringBuilder sb = new StringBuilder();
        sb.append("SmbOperationException{");
        sb.append("errorCode=").append(errorCode);
        sb.append(", category=").append(errorCode.getCategory());
        sb.append(", retryable=").append(isRetryable());
        sb.append(", attempt=").append(attemptNumber);
        sb.append(", operation='").append(operationName).append('\'');

        if (ntStatus != 0) {

        buf.append("-Xlog:gc*,gc+age=trace,safepoint:file=");
        if (logFilePath != null) {
            buf.append(logFilePath);
        } else {
            buf.append(ComponentUtil.getSystemHelper().getLogFilePath());
        }
        buf.append(File.separator);
        buf.append("gc-").append(getExecuteType()).append(".log");
        buf.append(":utctime,pid,tags:filecount=5,filesize=64m");