/// <summary>
/// Returns the value of the header with the given name.
/// </summary>
/// <param name="headerName">Name of the header.</param>
/// <returns>Returns the value of the header with the given name.</returns>
public override string GetHeader(string headerName)
{
Util.CheckArgumentNullAndEmpty(headerName, "headerName");
return(HttpWebRequestMessage.GetHeaderValue(this.httpRequest, headerName));
}