code: def to_numpy(tensor):
      if isinstance(tensor, np.ndarray):
          return tensor
      elif isinstance(tensor, tf.Tensor):
          return tensor.numpy()
      elif isinstance(tensor, tf.Variable):
          return tf.convert_to_tensor(tensor).numpy()
      else:
          return tensor
  
file_path: tensorly/tensorly/backend/tensorflow_backend.py
imports: import numpy
  from .core import Backend, backend_types, backend_basic_math, backend_array
label_desc: Use image node_id 4 for calling the TensorflowBackend obj's underlying member method code with example usage: obj.to_numpy(tensor) and returns: tensor, tensor, tf, tensor