How to use the @opentelemetry/types.SpanKind function in @opentelemetry/types

*      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import * as types from '@opentelemetry/types';
import { ReadableSpan } from '@opentelemetry/tracing';
import { hrTimeToMicroseconds } from '@opentelemetry/core';
import * as zipkinTypes from './types';

const ZIPKIN_SPAN_KIND_MAPPING = {
  [types.SpanKind.CLIENT]: zipkinTypes.SpanKind.CLIENT,
  [types.SpanKind.SERVER]: zipkinTypes.SpanKind.SERVER,
  [types.SpanKind.CONSUMER]: zipkinTypes.SpanKind.CONSUMER,
  [types.SpanKind.PRODUCER]: zipkinTypes.SpanKind.PRODUCER,
  // When absent, the span is local.
  [types.SpanKind.INTERNAL]: undefined,
};

export const statusCodeTagName = 'ot.status_code';
export const statusDescriptionTagName = 'ot.status_description';

/**
 * Translate OpenTelemetry ReadableSpan to ZipkinSpan format
 * @param span Span to be translated
 */
export function toZipkinSpan(
  span: ReadableSpan,

*
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import * as types from '@opentelemetry/types';
import { ReadableSpan } from '@opentelemetry/tracing';
import { hrTimeToMicroseconds } from '@opentelemetry/core';
import * as zipkinTypes from './types';

const ZIPKIN_SPAN_KIND_MAPPING = {
  [types.SpanKind.CLIENT]: zipkinTypes.SpanKind.CLIENT,
  [types.SpanKind.SERVER]: zipkinTypes.SpanKind.SERVER,
  [types.SpanKind.CONSUMER]: zipkinTypes.SpanKind.CONSUMER,
  [types.SpanKind.PRODUCER]: zipkinTypes.SpanKind.PRODUCER,
  // When absent, the span is local.
  [types.SpanKind.INTERNAL]: undefined,
};

export const statusCodeTagName = 'ot.status_code';
export const statusDescriptionTagName = 'ot.status_description';

/**
 * Translate OpenTelemetry ReadableSpan to ZipkinSpan format
 * @param span Span to be translated
 */
export function toZipkinSpan(
  span: ReadableSpan,
  serviceName: string,

}
    const traceFlags = samplingDecision
      ? TraceFlags.SAMPLED
      : TraceFlags.UNSAMPLED;
    const spanContext = { traceId, spanId, traceFlags, traceState };
    const recordEvents = options.isRecording || false;
    if (!recordEvents && !samplingDecision) {
      this.logger.debug('Sampling is off, starting no recording span');
      return new NoRecordingSpan(spanContext);
    }

    const span = new Span(
      this,
      name,
      spanContext,
      options.kind || types.SpanKind.INTERNAL,
      parentContext ? parentContext.spanId : undefined,
      options.links || [],
      options.startTime
    );
    // Set default attributes
    span.setAttributes(
      Object.assign({}, this._defaultAttributes, options.attributes)
    );
    return span;
  }