'GetUserBlock': Modify the block found by the block manager. This may be a
single block or a composite block made from multiple blocks; the original
blocks can be seen using CompositeBlock::getOriginalBlocks()
+$user: User targeted by the block
+$ip: string|null The IP of the current request if $user is the current user
+ and they're not exempted from IP blocks. Null otherwise.
&$block: AbstractBlock object
'getUserPermissionsErrors': Add a permissions error when permissions errors are
'SpecialContributions::getForm::filters': Called with a list of filters to render
on Special:Contributions.
$sp: SpecialContributions object, for context
-&$filters: List of filters rendered as HTML
+&$filters: List of filter object definitions (compatible with OOUI form)
'SpecialListusersDefaultQuery': Called right before the end of
UsersPager::getDefaultQuery().