(PHP 5 >= 5.1.0, PHP 7) Position cursor on the first Attribute
(PHP 5 >= 5.1.0, PHP 7) Set the data containing a RelaxNG Schema
(PHP 5 >= 5.1.0, PHP 7) Set parser options
(PHP 5 >= 5.1.0, PHP 7) Position cursor on the next Attribute
(PHP 5 >= 5.1.0, PHP 7) Close the XMLReader input
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