/// <summary>
/// Set the content format of the payload
/// </summary>
/// <param name="contentFormat">The content format identifier</param>
public void SetContentFormat(CoAPContentFormatOption contentFormat)
{
if (this.Options == null)
{
this.Options = new CoAPHeaderOptions();
}
this.Options.Add(new CoAPHeaderOption(CoAPHeaderOption.CONTENT_FORMAT, contentFormat.GetValueAsBytes()));
}