hammer_btree_extract_data
error = hammer_btree_extract_data(&cursor1);
error = hammer_btree_extract_data(&cursor2);
error = hammer_btree_extract_data(&cursor);
error = hammer_btree_extract_data(&cursor);
error = hammer_btree_extract_data(&cursor);
error = hammer_btree_extract_data(&cursor);
error = hammer_btree_extract_data(&cursor);
error = hammer_btree_extract_data(cursor);
if (hammer_btree_extract_data(cursor))
error = hammer_btree_extract_data(cursor);