code: def __call__(self, caption):
      caption = self.prompt + self.pre_caption(caption)
  
      return caption
  
imports: import re
  from lavis.common.registry import registry
  from lavis.processors.base_processor import BaseProcessor
  from lavis.processors.randaugment import RandomAugment
  from omegaconf import OmegaConf
  from torchvision import transforms
  from torchvision.transforms.functional import InterpolationMode
label_desc: Use image node_id 2 for calling the BlipCaptionProcessor obj's underlying member method code with example usage: obj.__call__(caption) and returns: caption