guint size;
LttTypeEnum type_class; //which type
GHashTable *enum_map; //maps enum labels to numbers.
+ gint32 highest_value; //For enum
+ gint32 lowest_value; //For enum
GArray *fields; // Array of LttFields, for array, sequence, union, struct.
GData *fields_by_name;
guint network; // Is the type in network byte order ?