Custom External Object

Hi, 

Is there a way to retrieve ParmanentVault into a custom Application used External Object connection ? 
Final need is to retrieve ColumnType from MFDataType from readed configuration i.e. 

public override List<ColumnDefinition> GetAvailableColumns()
        {
            // TODO: Return the column definitions that are supported for the current configuration.
            List<ColumnDefinition> colDefs = new List<ColumnDefinition>();
            foreach (ColumnMapping colMap in Config.ColumnMapping)
            {
                ColumnDefinition colDef = new ColumnDefinition()
                {
                    Ordinal = colMap.Ordinal,
                    Name = colMap.SourceColumnName,
                    Type = GetColumnTypeFromPropertyDefID(colMap.PropertyDef)
                };
                colDefs.Add(colDef);
            }
            return colDefs;
        }
        
        /// <summary>
        /// Get ColumnType from propertyDef ID
        /// </summary>
        /// <param name="propertyDefID">PropertyDef ID in vault</param>
        /// <returns>ColumnType</returns>
        public static ColumnType GetColumnTypeFromPropertyDefID(int propertyDefID)
        {
            PropertyDefAdmin propDefAdmin = PermanentVault.PropertyDefOperations.GetPropertyDefAdmin(propertyDefID);
            return TypeMappingByMFDataType[propDefAdmin.PropertyDef.DataType];
        }

        /// <summary>
        /// Map of M-Files types to ColumnType
        /// </summary>
        public static readonly Dictionary<MFDataType, ColumnType> TypeMappingByMFDataType = new Dictionary<MFDataType, ColumnType>()
        {
                { MFDataType.MFDatatypeMultiLineText, ColumnType.DBTYPE_WSTR },
                { MFDataType.MFDatatypeText, ColumnType.DBTYPE_WSTR },
                { MFDataType.MFDatatypeInteger, ColumnType.DBTYPE_I4 },
                { MFDataType.MFDatatypeInteger64, ColumnType.DBTYPE_I8 },
                { MFDataType.MFDatatypeBoolean, ColumnType.DBTYPE_BOOL },
                { MFDataType.MFDatatypeFloating, ColumnType.DBTYPE_DECIMAL },
                { MFDataType.MFDatatypeDate, ColumnType.DBTYPE_DBDATE } ,
                { MFDataType.MFDatatypeTime, ColumnType.DBTYPE_DBDATE },
                { MFDataType.MFDatatypeTimestamp, ColumnType.DBTYPE_DBDATE },
                { MFDataType.MFDatatypeLookup,  ColumnType.DBTYPE_I4 },
        };

Thanks 
regards

Fabien