-uint64_t array_len(struct definition_array *array);
-struct definition *array_index(struct definition_array *array, uint64_t i);
-int array_rw(struct stream_pos *pos, struct definition *definition);
-GString *get_char_array(const struct definition *field);
-int get_array_len(const struct definition *field);
+uint64_t bt_array_len(struct definition_array *array);
+struct definition *bt_array_index(struct definition_array *array, uint64_t i);
+int bt_array_rw(struct stream_pos *pos, struct definition *definition);
+GString *bt_get_char_array(const struct definition *field);
+int bt_get_array_len(const struct definition *field);