original_string: protected function deleteKeysByReference($reference)
      {
          foreach (explode('|', $this->tags->getNamespace()) as $segment) {
              $this->deleteValues($segment = $this->referenceKey($segment, $reference));
  
              $this->store->connection()->del($segment);
          }
      }
code: protected function deleteKeysByReference($reference)
      {
          foreach (explode('|', $this->tags->getNamespace()) as $segment) {
              $this->deleteValues($segment = $this->referenceKey($segment, $reference));
  
              $this->store->connection()->del($segment);
          }
      }
code_tokens: protected function deleteKeysByReference ( $ reference ) { foreach ( explode ( '|' , $ this -> tags -> getNamespace ( ) ) as $ segment ) { $ this -> deleteValues ( $ segment = $ this -> referenceKey ( $ segment , $ reference ) ) ; $ this -> store -> connection ( ) -> del ( $ segment ) ; } }
docstring: Find and delete all of the items that were stored against a reference.
  
  @param  string  $reference
  @return void
docstring_tokens: Find and delete all of the items that were stored against a reference .