text: /*
   * Licensed to Elasticsearch B.V. under one or more contributor
   * license agreements. See the NOTICE file distributed with
   * this work for additional information regarding copyright
   * ownership. Elasticsearch B.V. licenses this file to you under
   * the Apache License, Version 2.0 (the "License"); you may
   * not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *    http://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.
   */
  
  'use strict'
  
  /* eslint camelcase: 0 */
  /* eslint no-unused-vars: 0 */
  
  const { handleError, snakeCaseKeys, normalizeArguments, kConfigurationError } = require('../utils')
  const acceptedQuerystring = ['preference', 'routing', 'ignore_unavailable', 'expand_wildcards', 'keep_alive', 'pretty', 'human', 'error_trace', 'source', 'filter_path']
  const snakeCase = { ignoreUnavailable: 'ignore_unavailable', expandWildcards: 'expand_wildcards', keepAlive: 'keep_alive', errorTrace: 'error_trace', filterPath: 'filter_path' }
  
  function openPointInTimeApi (params, options, callback) {
    ;[params, options, callback] = normalizeArguments(params, options, callback)
  
    // check required parameters
    if (params.index == null) {
      const err = new this[kConfigurationError]('Missing required parameter: index')
      return handleError(err, callback)
    }
  
    let { method, body, index, ...querystring } = params
    querystring = snakeCaseKeys(acceptedQuerystring, snakeCase, querystring)
  
    let path = ''
    if (method == null) method = 'POST'
    path = '/' + encodeURIComponent(index) + '/' + '_pit'
  
    // build request object
    const request = {
      method,
      path,
      body: body || '',
      querystring
    }
  
    return this.transport.request(request, options, callback)
  }
  
  module.exports = openPointInTimeApi
  