code: def test_delete_embeddings(self):
      model = self.get_model()
      tokenizer = AutoTokenizer.from_pretrained("tests/fixtures/SiBERT")
      model.add_embeddings("test", tokenizer)
      self.assertEqual(model.active_embeddings, "test")
      model.delete_embeddings("test")
      self.assertFalse("test" in model.loaded_embeddings)
      self.assertEqual(model.active_embeddings, "default")
  
file_path: adapters/tests/test_adapter_embeddings.py
imports: import copy
  import tempfile
  import torch
  from adapters import AutoAdapterModel
  from transformers import AutoTokenizer, Trainer, TrainingArguments
  from transformers.testing_utils import require_torch, torch_device
label_desc: Use image node_id 4 for calling the EmbeddingTestMixin obj's underlying member method code with example usage: obj.test_delete_embeddings() without return types