docs: def index(self):
          """
          Reset inspector buffers and index project sources dependencies.
  
          This have to be executed each time an event occurs.
  
          Note:
              If a Boussole exception occurs during operation, it will be catched
              and an error flag will be set to ``True`` so event operation will
              be blocked without blocking or breaking watchdog observer.
          """
          self._event_error = False
  
          try:
              compilable_files = self.finder.mirror_sources(
                  self.settings.SOURCES_PATH,
                  targetdir=self.settings.TARGET_PATH,
                  excludes=self.settings.EXCLUDES
              )
              self.compilable_files = dict(compilable_files)
              self.source_files = self.compilable_files.keys()
  
              # Init inspector and do first inspect
              self.inspector.reset()
              self.inspector.inspect(
                  *self.source_files,
                  library_paths=self.settings.LIBRARY_PATHS
              )
          except BoussoleBaseException as e:
              self._event_error = True
              self.logger.error(six.text_type(e))