By default, the extra section is not merged and there will be many
cases where the merge of the extra section is performed too late
to be of use to other plugins. When enabled, merging uses one of
two strategies - either 'first wins' or 'last wins'. When enabled,
'first wins' is the default behaviour. If Replace mode is activated
then 'last wins' is used.
public shouldMergeExtra ( ) : boolean | ||
return | boolean |