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2
vendor/symfony/console/Helper/HelperSet.php
vendored
2
vendor/symfony/console/Helper/HelperSet.php
vendored
@@ -38,7 +38,7 @@ class HelperSet implements \IteratorAggregate
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/**
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* @return void
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*/
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public function set(HelperInterface $helper, string $alias = null)
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public function set(HelperInterface $helper, ?string $alias = null)
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{
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$this->helpers[$helper->getName()] = $helper;
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if (null !== $alias) {
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