code: def release(self, buffer=True):
          
          for key, vao in self.vaos:
              vao.release()
  
          if buffer:
              for buff in self.buffers:
                  buff.buffer.release()
  
              if self._index_buffer:
                  self._index_buffer.release()
docs: Destroy the vao object
  
          Keyword Args:
              buffers (bool): also release buffers