filter collection must be protected

Author: Spamercz

src/Mapping/Analyzer/Custom/CommonGrams.php

@@ -9,7 +9,7 @@ class CommonGrams implements \Spameri\ElasticQuery\Mapping\CustomAnalyzerInterfa
 
 	public const NAME = 'customCommonGrams';
 
-	private \Spameri\ElasticQuery\Mapping\Settings\Analysis\FilterCollection $filter;
+	protected \Spameri\ElasticQuery\Mapping\Settings\Analysis\FilterCollection|null $filter = null;
 
 	private \Spameri\ElasticQuery\Mapping\Filter\AbstractStop $stopFilter;
 

src/Mapping/Analyzer/Custom/EdgeNgram.php

@@ -9,7 +9,7 @@ class EdgeNgram implements \Spameri\ElasticQuery\Mapping\CustomAnalyzerInterface
 
 	public const NAME = 'customEdgeNgram';
 
-	private \Spameri\ElasticQuery\Mapping\Settings\Analysis\FilterCollection $filter;
+	protected \Spameri\ElasticQuery\Mapping\Settings\Analysis\FilterCollection|null $filter = null;
 
 	private \Spameri\ElasticQuery\Mapping\Filter\AbstractStop $stopFilter;
 

src/Mapping/Analyzer/Custom/Lowercase.php

@@ -7,7 +7,7 @@
 class Lowercase implements \Spameri\ElasticQuery\Mapping\CustomAnalyzerInterface, \Spameri\ElasticQuery\Collection\Item
 {
 
-	private \Spameri\ElasticQuery\Mapping\Settings\Analysis\FilterCollection $filter;
+	protected \Spameri\ElasticQuery\Mapping\Settings\Analysis\FilterCollection|null $filter = null;
 
 
 	public function key(): string

src/Mapping/Analyzer/Custom/WordDelimiter.php

@@ -9,7 +9,7 @@ class WordDelimiter implements \Spameri\ElasticQuery\Mapping\CustomAnalyzerInter
 
 	public const NAME = 'customWordDelimiter';
 
-	private \Spameri\ElasticQuery\Mapping\Settings\Analysis\FilterCollection $filter;
+	protected \Spameri\ElasticQuery\Mapping\Settings\Analysis\FilterCollection|null $filter = null;
 
 	private \Spameri\ElasticQuery\Mapping\Filter\AbstractStop $stopFilter;