code: def replace(self, nodes):
          
  
          files = {}
          for node in nodes:
              if node.family == "SearchFile":
                  files[node.file] = node.children
              elif node.family == "SearchOccurence":
                  file = node.parent.file
                  if not file in files:
                      files[file] = []
                  files[file].append(node)
  
          replacement_pattern = self.Replace_With_comboBox.currentText()
          SearchAndReplace.insert_pattern(replacement_pattern, self.__replace_with_patterns_model)
  
          replace_results = {}
          for file, occurrences in files.iteritems():
              editor = self.__container.get_editor(file)
              if editor:
                  document = editor.document()
              else:
                  cache_data = self.__files_cache.get_content(file)
                  if cache_data is None:
                      LOGGER.warning(
                          "!> {0} | '{1}' file doesn't exists in files cache!".format(self.__class__.__name__, file))
                      continue
  
                  content = self.__files_cache.get_content(file).content
                  document = self.__get_document(content)
                  self.__cache(file, content, document)
              replace_results[file] = self.__replace_within_document(document, occurrences, replacement_pattern)
  
          self.set_replace_results(replace_results)
          self.__container.engine.notifications_manager.notify(
              "{0} | '{1}' pattern occurence(s) replaced in '{2}' files!".format(self.__class__.__name__,
                                                                                 sum(replace_results.values()),
                                                                                 len(replace_results.keys())))
docs: Replaces user defined files search pattern occurrences with replacement pattern using given nodes.
  
          :param nodes: Nodes.
          :type nodes: list
          :return: Method success.
          :rtype: bool