Missing `attr`, `label`, `value` attributes in Bag Nodes

[dgpaci]

# Get all attributes
node = bag.get_node('api_key')
node.attr

raises this error:

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
Cell In[4], line 3
      1 # Get all attributes
      2 node = bag.get_node('api_key')
----> 3 node.attr

AttributeError: 'coroutine' object has no attribute 'attr'

[dgpaci]

Same error with label:

bag = Bag()
bag.set_item('user', 'Alice', role='admin')

node = bag.get_node('user')
node.label

/Users/dgpaci/sviluppo/gnrenv/lib/python3.12/site-packages/pygments/regexopt.py:26: RuntimeWarning: coroutine 'Bag.get_node' was never awaited
  def regex_opt_inner(strings, open_paren):
RuntimeWarning: Enable tracemalloc to get the object allocation traceback
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
Cell In[29], line 5
      2 bag.set_item('user', 'Alice', role='admin')
      4 node = bag.get_node('user')
----> 5 node.label

AttributeError: 'coroutine' object has no attribute 'label'

... and value:

node.value
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
Cell In[30], line 1
----> 1 node.value

AttributeError: 'coroutine' object has no attribute 'value'