The file core/modules/system/theme.api.php does not have @addtogroup hooks around its hooks. It should.
In addition, at the end of the doc block at the top of the file (@defgroup themeable), there should not be
End of "defgroup themeable".
Please wait on this until #2307859: Move theme/render hooks from system.api.php to theme.api.php is committed/fixed, as it will conflict.
Documentation on how to do an @addtogroup is at
https://www.drupal.org/node/1354#defgroup
This should start before the first "function hook_*" and the closing @} should be at the end of the file.
Comments
Comment #1
mcdruid commentedLooks like the two issues identified here have already been resolved (most likely as part of #2307859: Move theme/render hooks from system.api.php to theme.api.php).
Comment #2
jhodgdonOh yes, thanks! Forgot we had a separate issue.