if ( NATIVE_DATA_TYPE_MEMBER.equals( propName ) ) return null;
	protected Object getIntrinsicProperty( String propName )	{		if ( POSITION_MEMBER.equals( propName ) )			return position;		if ( NAME_MEMBER.equals( propName ) )			return columnName;		if ( DATA_TYPE_MEMBER.equals( propName ) )			return dataType;		assert false;		return null;	}