namespace Microsoft.Rest.ClientRuntime
{
  [System.CodeDom.Compiler.GeneratedCode("AutoRest/Incubator", "1.1")]
  public static class Extensions
  {
    public static bool If<T>(T input, out T output)
    {
      if (null == input)
      {
        output = default(T);
        return false;
      }
      output = input;
      return true;
    }

    public static void AddIf<T>(T value, System.Action<T> addMethod)
    {
      if (null != value)
      {
        addMethod(value);
      }
    }

    public static void AddIf<T>(T value, string serializedName, System.Action<string, T> addMethod)
    {
      if (null != value)
      {
        addMethod(serializedName, value);
      }
    }

    /// <summary>
    /// Gets the header values from the response (either headers or content.headers )
    /// </summary>
    /// <param name="response">the HttpResponseMessage to fetch a header from</param>
    /// <param name="headerName">the header name</param>
    /// <param name="values">the enumerable of values from the header (or null if not present)</param>
    /// <returns>boolean determining if the parameter was present.</returns>
    public static bool GetHeader(this System.Net.Http.HttpResponseMessage response, string headerName, out System.Collections.Generic.IEnumerable<string> values)
    {
      values = null;
      return true == response?.Headers?.TryGetValues(headerName, out values) ? true :
          true == response?.Content?.Headers?.TryGetValues(headerName, out values) ?
          true : false;
    }
  }

}