/// <summary>
/// This method is used to create request envelope message body, but not include the RequestCollection.
/// </summary>
/// <param name="versionTypeNumber">Specify the version type number.</param>
/// <param name="minorVersionTypeNumber">Specify the minor version type number.</param>
private void CreateEnvelopeBody(ushort? versionTypeNumber, ushort? minorVersionTypeNumber)
{
this.requestEnvelope = new EnvelopeBody();
this.requestEnvelope.RequestVersion = this.CreateRequestVersion(versionTypeNumber, minorVersionTypeNumber);
this.requestEnvelope.RequestCollection = new RequestCollection();
this.requestEnvelope.RequestCollection.CorrelationId = Guid.NewGuid().ToString();
}
