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Vitaliy
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Merge branch '1.0.0-develop' into code-generation-observer-class
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<!--
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/*
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* Copyright © Magento, Inc. All rights reserved.
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* See COPYING.txt for license details.
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*/
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-->
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<html>
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<body>
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<table width="100%" border="0" cellpadding="5" cellspacing="0" style="border-collapse: collapse">
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<tr>
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<td><font face="verdana" size="-1">
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The object manager uses the preference mappings to determine what the default implementation is for that class for a particular scope.
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<a href="https://devdocs.magento.com/guides/v2.3/extension-dev-guide/build/di-xml-file.html#override-a-method-using-preference-nodes">
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For example</a>, a preference is used to override a public or protected method from a core class.
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</font><br>
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</td>
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</tr>
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<tr>
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<td><font face="verdana" size="-1">
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Read more Abbout the preferences in the <a href="https://devdocs.magento.com/guides/v2.3/extension-dev-guide/build/di-xml-file.html#abstraction-implementation-mappings">DevDocs</a>.
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</font><br>
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</td>
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</tr
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</table>
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<table width="100%" border="0" cellpadding="5" cellspacing="0" style="border-collapse: collapse">
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<tr>
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<td colspan="3"><font face="verdana" size="-1">Predefined variables explanation:</font></td>
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</tr>
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<tr>
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<td valign="top"><nobr><font face="verdana" size="-2"><b>${NAMESPACE}</b></font></nobr></td>
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<td width="10">&nbsp;</td>
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<td width="100%" valign="top"><font face="verdana" size="-1">Preference's namespace.</font></td>
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</tr>
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<tr>
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<td valign="top"><nobr><font face="verdana" size="-2"><b>${USE}</b></font></nobr></td>
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<td width="10">&nbsp;</td>
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<td width="100%" valign="top"><font face="verdana" size="-1">The namespace of the PHP class to extend from.</font></td>
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</tr>
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<tr>
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<td valign="top"><nobr><font face="verdana" size="-2"><b>${NAME}</b></font></nobr></td>
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<td width="10">&nbsp;</td>
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<td width="100%" valign="top"><font face="verdana" size="-1">The name of PHP class.</font></td>
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</tr>
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<tr>
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<td valign="top"><nobr><font face="verdana" size="-2"><b>${EXTENDS}</b></font></nobr></td>
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<td width="10">&nbsp;</td>
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<td width="100%" valign="top"><font face="verdana" size="-1">The name of the PHP class to extend from.</font></td>
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</tr>
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</table>
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</body>
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</html>

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