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The name is\n   * case-insensitive.\n   * @param name - The name of the header to set. This value is case-insensitive.\n   * @param value - The value of the header to set.\n   */\n  public set(name: string, value: string | number | boolean): void {\n    this._headersMap.set(normalizeName(name), { name, value: String(value).trim() });\n  }\n\n  /**\n   * Get the header value for the provided header name, or undefined if no header exists in this\n   * collection with the provided name.\n   * @param name - The name of the header. This value is case-insensitive.\n   */\n  public get(name: string): string | undefined {\n    return this._headersMap.get(normalizeName(name))?.value;\n  }\n\n  /**\n   * Get whether or not this header collection contains a header entry for the provided header name.\n   * @param name - The name of the header to set. This value is case-insensitive.\n   */\n  public has(name: string): boolean {\n    return this._headersMap.has(normalizeName(name));\n  }\n\n  /**\n   * Remove the header with the provided headerName.\n   * @param name - The name of the header to remove.\n   */\n  public delete(name: string): void {\n    this._headersMap.delete(normalizeName(name));\n  }\n\n  /**\n   * Get the JSON object representation of this HTTP header collection.\n   */\n  public toJSON(options: { preserveCase?: boolean } = {}): RawHttpHeaders {\n    const result: RawHttpHeaders = {};\n    if (options.preserveCase) {\n      for (const entry of this._headersMap.values()) {\n        result[entry.name] = entry.value;\n      }\n    } else {\n      for (const [normalizedName, entry] of this._headersMap) {\n        result[normalizedName] = entry.value;\n      }\n    }\n\n    return result;\n  }\n\n  /**\n   * Get the string representation of this HTTP header collection.\n   */\n  public toString(): string {\n    return JSON.stringify(this.toJSON({ preserveCase: true }));\n  }\n\n  /**\n   * Iterate over tuples of header [name, value] pairs.\n   */\n  [Symbol.iterator](): Iterator<[string, string]> {\n    return headerIterator(this._headersMap);\n  }\n}\n\n/**\n * Creates an object that satisfies the `HttpHeaders` interface.\n * @param rawHeaders - A simple object representing initial headers\n */\nexport function createHttpHeaders(rawHeaders?: RawHttpHeadersInput): HttpHeaders {\n  return new HttpHeadersImpl(rawHeaders);\n}\n"]}