updated pretrainer to work with correct imports

src/aiia/pretrain/pretrainer.py

@@ -5,7 +5,7 @@ import datetime
 import time
 import pandas as pd
 from tqdm import tqdm
-from ..model.Model import AIIA
+from transformers import PreTrainedModel
 from ..model.config import AIIAConfig
 from ..data.DataLoader import AIIADataLoader
 import os
@@ -23,7 +23,7 @@ class ProjectionHead(nn.Module):
             return self.conv_rotate(x).mean(dim=(2, 3))  # Global average pooling for rotation task
 
 class Pretrainer:
-    def __init__(self, model: AIIA, learning_rate=1e-4, config: AIIAConfig=None):
+    def __init__(self, model: PreTrainedModel, learning_rate=1e-4, config: AIIAConfig=None):
         """
         Initialize the pretrainer with a model.