code: def target_lines(self):
      
      target_lines = self._target_source_lines[:]
      deps_begin, deps_end = self._dependencies_interval
      target_lines[deps_begin:deps_end] = self.dependency_lines()
      return target_lines
docs: The formatted target_type(...) lines for this target.
  
      This is just a convenience method for extracting and re-injecting the changed
      `dependency_lines` into the target text.