Fetch live dynamic items from master ID

namespace Websilk.Sitefinity {
    public static partial class SitefinityFunctions {
        /* Fetch - ALL */
        private static Type ResolveType(string type) {
            return TypeResolutionService.ResolveType(string.Concat("Telerik.Sitefinity.DynamicTypes.Model.", type));
        }
        public static IQueryable<DynamicContent> GetAllDynamicContentItems(string type) {
            return DynamicModuleManager.GetManager().GetDataItems(ResolveType(type));
        }

        /* Fetch - LIVE RECORDS */
        public static IQueryable<DynamicContent> GetDynamicContentItems(string type, bool mustBePublished = true) {
            return GetAllDynamicContentItems(type).Where(o => (!mustBePublished || o.Visible) && o.Status == ContentLifecycleStatus.Live);
        }
        public static IQueryable<DynamicContent> GetDynamicContentItems(string type, IEnumerable<Guid> ids, bool mustBePublished = true, bool preserveOrder = false)
        {
            var dynamicContentItems = GetDynamicContentItems(type, mustBePublished).Where(o => ids.Contains(o.Id));

            //If you're not asked to preserve the ordering at this point (default), then you can efficiently return a true IQueryable
            if (!preserveOrder)
            {
                return dynamicContentItems;
            }

            //Ordering forces iteration, so has to return a fake IQueryable
            return ids.Select(thisId => dynamicContentItems.SingleOrDefault(o => o.OriginalContentId == thisId)).Where(dynamicContentItem => dynamicContentItem != null).AsQueryable();
        }

        /* Fetch - LIVE RECORDS BY MASTERID */
        public static IQueryable<DynamicContent> GetDynamicContentItemsFromMaster(string type, IEnumerable<Guid> ids, bool mustBePublished = true, bool preserveOrder = false) {
            var dynamicContentItems = GetDynamicContentItems(type, mustBePublished).Where(o => ids.Contains(o.OriginalContentId));

            //If you're not asked to preserve the ordering at this point (default), then you can efficiently return a true IQueryable
            if (!preserveOrder)
            {
                return dynamicContentItems;
            }

            //Ordering forces iteration, so has to return a fake IQueryable
            return ids.Select(thisId => dynamicContentItems.SingleOrDefault(o => o.OriginalContentId == thisId)).Where(dynamicContentItem => dynamicContentItem != null).AsQueryable();
        }
    }
}