@@ -158,6 +158,9 @@ |
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158 | 158 | |
159 | 159 | protected abstract function deleteBeginning(); |
160 | 160 | |
161 | + /** |
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162 | + * @param integer $index |
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163 | + */ |
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161 | 164 | protected abstract function deleteAt($index); |
162 | 165 | |
163 | 166 | protected abstract function deleteEnd(); |