[doc issue] filter ordering #19730

Expected Behavior

The documentation should clarify what addFilterBefore means.
For example, if the we have filter chain is A → B → C and we call addFilterBefore(X, C.class),
is the result
A → B → X → C or
A → X → B → C or
X → A → B → C .
all of them follow the rule of ( X before C ) ?
so i think we need some clarifications for addFilterBefore and addFilterAfter cases

Current Behavior

The documentation only says that

#addFilterBefore(Filter, Class<?>)adds your filter before another filter
#addFilterAfter(Filter, Class<?>) adds your filter after another filter

which does not make the exact ordering guarantee clear.