System.Xml.Serialization.XmlSchemaImporter.ImportGroupMembers C# (CSharp) Method

        private void ImportGroupMembers(XmlSchemaParticle particle, string identifier, CodeIdentifiers members, CodeIdentifiers membersScope, INameScope elementsScope, string ns, bool groupRepeats, ref bool mixed, ref bool needExplicitOrder, bool allowDuplicates, bool allowUnboundedElements)
        {
            if (particle is XmlSchemaGroupRef)
            {
                XmlSchemaGroupRef refGroup = (XmlSchemaGroupRef)particle;
                if (!refGroup.RefName.IsEmpty)
                {
                    AddReference(refGroup.RefName, GroupsInUse, SR.XmlCircularGroupReference);
                    ImportGroupMembers(FindGroup(refGroup.RefName).Particle, identifier, members, membersScope, elementsScope, refGroup.RefName.Namespace, groupRepeats | refGroup.IsMultipleOccurrence, ref mixed, ref needExplicitOrder, allowDuplicates, allowUnboundedElements);
                    RemoveReference(refGroup.RefName, GroupsInUse);
                }
            }
            else if (particle is XmlSchemaGroupBase)
            {
                XmlSchemaGroupBase group = (XmlSchemaGroupBase)particle;

                if (group.IsMultipleOccurrence)
                    groupRepeats = true;

                if (GenerateOrder && groupRepeats && group.Items.Count > 1)
                {
                    ImportChoiceGroup(group, identifier, members, membersScope, elementsScope, ns, groupRepeats, ref needExplicitOrder, allowDuplicates);
                }
                else
                {
                    for (int i = 0; i < group.Items.Count; i++)
                    {
                        object item = group.Items[i];
                        if (item is XmlSchemaChoice)
                            ImportChoiceGroup((XmlSchemaGroupBase)item, identifier, members, membersScope, elementsScope, ns, groupRepeats, ref needExplicitOrder, allowDuplicates);
                        else if (item is XmlSchemaElement)
                            ImportElementMember((XmlSchemaElement)item, identifier, members, membersScope, elementsScope, ns, groupRepeats, ref needExplicitOrder, allowDuplicates, allowUnboundedElements);
                        else if (item is XmlSchemaAny)
                        {
                            ImportAnyMember((XmlSchemaAny)item, identifier, members, membersScope, elementsScope, ns, ref mixed, ref needExplicitOrder, allowDuplicates);
                        }
                        else if (item is XmlSchemaParticle)
                        {
                            ImportGroupMembers((XmlSchemaParticle)item, identifier, members, membersScope, elementsScope, ns, groupRepeats, ref mixed, ref needExplicitOrder, allowDuplicates, true);
                        }
                    }
                }
            }
        }