<p>In <a href="https://github.com/dbsrgits/dbix-class/pull/88#discussion_r43759467">lib/DBIx/Class/ResultSource.pm</a>:</p>
<pre style='color:#555'>&gt; @@ -702,7 +702,7 @@ sub sequence {
&gt;  
&gt;  =over 4
&gt;  
&gt; -=item Arguments: $name?, \@colnames
&gt; +=item Arguments: $name?, \@colnames, \%extra?
&gt;  
</pre>
<p>This is <code>add_unique_constraint</code> rather than <code>add_unique_constraints</code>. Shall I also change the plural version to accept hashrefs to follow suit?</p>

<p>This makes more sense, actually, now that I see what you're after.</p>

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