get terms – $ args so that get_terms () returns ORDER BY FIELDS

I want to use get_terms () For a taxonomy like to emulate MySQL. ORDER BY FIELD e.g., ... FIELD (& # 39; aaa & # 39 ;, & # 39; ccc & # 39 ;, & # 39; bbb & # 39 ;, & # 39; eee & # 39 ;, & # 39; ddd & # 39;)

A var_dump The code snippet currently looks like:

Object (WP_Term) # 1861 (10) {...["slug"]=> string (3) "eee"
Object (WP_Term) # 1862 (10) {...["slug"]=> string (3) "bbb"
Object (WP_Term) # 1863 (10) {...["slug"]=> string (3) "aaa"
Object (WP_Term) # 1864 (10) {...["slug"]=> string (3) "ccc"
Object (WP_Term) # 1865 (10) {...["slug"]=> string (3) "ddd" 

I've been reading the codex but I'm missing something. This is what I have:

$ args = array (
& # 39; orderby & # 39; => & # 39; include & # 39 ;,
& # 39; order & # 39; => & # 39; ASC & # 39 ;,
& # 39; include & # 39; => array (& # 39; aaa & # 39 ;, & # 39; ccc & # 39 ;, & # 39; bbb & # 39 ;, & # 39; eee & # 39 ;, & # 39; ddd & # 39;),
& # 39; fields & # 39; => & # 39; all & # 39 ;,
);

$ roles = get_terms (& # 39; role & # 39 ;, $ args);

As you can see above, the taxonomy in wp_mc_term_taxonomy is "role" and the slugare & # 39; aaa & # 39 ;, & # 39; ccc & # 39 ;, & # 39; bbb & # 39 ;, eee & # 39 ;, & # 39; ddd & # 39; in wp_terms

What is the secret sauce? Thank you!