我有以下Swift代码:extensionArray{typealiasEqualTest=(Iterator.Element,Iterator.Element)->BoolfuncgroupSplitIndices(withEqualTestequal:EqualTest)->[Index]{returnindices.groupSplitIndices(withEqualTest:{equal(self[$0],self[$1])})}}extensionArraySlice{typealiasEqualTest=(Iterator.Element,Iterator.Element