System.Data.DataSet.GetDataSetSchema C# (CSharp) Method

        public static XmlSchemaComplexType GetDataSetSchema(XmlSchemaSet schemaSet)
        {
            // For performance resons we are exploiting the fact that config files content is constant 
            // for a given appdomain so we can safely cache the prepared schema complex type and reuse it
            if (s_schemaTypeForWSDL == null)
            {
                // to change the config file, appdomain needs to restart; so it seems safe to cache the schema
                XmlSchemaComplexType tempWSDL = new XmlSchemaComplexType();
                XmlSchemaSequence sequence = new XmlSchemaSequence();

                XmlSchemaAny any = new XmlSchemaAny();
                any.Namespace = XmlSchema.Namespace;
                any.MinOccurs = 0;
                any.ProcessContents = XmlSchemaContentProcessing.Lax;
                sequence.Items.Add(any);

                any = new XmlSchemaAny();
                any.Namespace = Keywords.DFFNS;
                any.MinOccurs = 0; // when recognizing WSDL - MinOccurs="0" denotes DataSet, a MinOccurs="1" for DataTable
                any.ProcessContents = XmlSchemaContentProcessing.Lax;
                sequence.Items.Add(any);
                sequence.MaxOccurs = decimal.MaxValue;

                tempWSDL.Particle = sequence;

                s_schemaTypeForWSDL = tempWSDL;
            }
            return s_schemaTypeForWSDL;
        }