/**
  * Extracts namespace definitions out of the given template string and sets
  * $this->namespaces.
  *
  * @param string $templateString Template string to extract the namespaces from
  * @return string The updated template string without namespace declarations inside
  * @throws \TYPO3\CMS\Fluid\Core\Parser\Exception if a namespace can't be resolved or has been declared already
  */
 protected function extractNamespaceDefinitions($templateString)
 {
     $templateString = parent::extractNamespaceDefinitions($templateString);
     foreach ($this->namespaces as $identifier => $phpNamespace) {
         if ($phpNamespace == 'Tx_ExtbaseHijax_ViewHelpers') {
             $this->namespaces[$identifier] = 'EssentialDots\\ExtbaseHijax\\ViewHelpers';
         }
     }
     return $templateString;
 }
 /**
  * Extracts namespace definitions out of the given template string and sets
  * $this->namespaces.
  *
  * @param string $templateString Template string to extract the namespaces from
  * @return string The updated template string without namespace declarations inside
  * @throws \TYPO3\CMS\Fluid\Core\Parser\Exception if a namespace can't be resolved or has been declared already
  * @override
  */
 protected function extractNamespaceDefinitions($templateString)
 {
     // ADDED STUFF HERE
     if (!$this->hasCustomNamespaces()) {
         return parent::extractNamespaceDefinitions($templateString);
     }
     $matches = array();
     preg_match_all(self::$SCAN_PATTERN_XMLNSDECLARATION, $templateString, $matches, PREG_SET_ORDER);
     foreach ($matches as $match) {
         // skip reserved "f" namespace identifier
         if ($match['identifier'] === 'f') {
             continue;
         }
         if (array_key_exists($match['identifier'], $this->namespaces)) {
             throw new \TYPO3\CMS\Fluid\Core\Parser\Exception(sprintf('Namespace identifier "%s" is already registered. Do not re-declare namespaces!', $match['identifier']), 1331135889);
         }
         if (isset($this->settings['namespaces'][$match['xmlNamespace']])) {
             $phpNamespace = $this->settings['namespaces'][$match['xmlNamespace']];
         } else {
             $matchedPhpNamespace = array();
             if (preg_match(self::$SCAN_PATTERN_DEFAULT_XML_NAMESPACE, $match['xmlNamespace'], $matchedPhpNamespace) === 0) {
                 continue;
             }
             $phpNamespace = str_replace('/', '\\', $matchedPhpNamespace['PhpNamespace']);
         }
         $this->namespaces[$match['identifier']] = $phpNamespace;
     }
     $matches = array();
     preg_match_all(self::$SCAN_PATTERN_NAMESPACEDECLARATION, $templateString, $matches, PREG_SET_ORDER);
     foreach ($matches as $match) {
         if (array_key_exists($match['identifier'], $this->namespaces)) {
             // ADDED STUFF HERE -- You can now specify a different value for a namespace
             $existingPhpNamespace = $this->namespaces[$match['identifier']];
             if ($existingPhpNamespace != $match['phpNamespace']) {
                 throw new \TYPO3\CMS\Fluid\Core\Parser\Exception(sprintf('Namespace identifier "%s" is already registered. Do not re-declare namespaces!', $match['identifier']), 1224241246);
             }
         } else {
             $this->namespaces[$match['identifier']] = $match['phpNamespace'];
         }
     }
     if ($matches !== array()) {
         $templateString = preg_replace(self::$SCAN_PATTERN_NAMESPACEDECLARATION, '', $templateString);
     }
     return $templateString;
 }