code: def get(identifier):
      """Retrieve a Keras constraint object via an identifier."""
      if identifier is None:
          return None
      if isinstance(identifier, dict):
          obj = deserialize(identifier)
      elif isinstance(identifier, str):
          obj = ALL_OBJECTS_DICT.get(identifier, None)
      else:
          obj = identifier
  
      if callable(obj):
          if inspect.isclass(obj):
              obj = obj()
          return obj
      else:
          raise ValueError(
              f"Could not interpret constraint identifier: {identifier}"
          )
  
file_path: keras/keras/constraints/__init__.py
imports: import inspect
  from keras.api_export import keras_export
  from keras.constraints.constraints import Constraint
  from keras.constraints.constraints import MaxNorm
  from keras.constraints.constraints import MinMaxNorm
  from keras.constraints.constraints import NonNeg
  from keras.constraints.constraints import UnitNorm
  from keras.saving import serialization_lib
  from keras.utils.naming import to_snake_case
label_desc: Use image node_id 3 for calling a global function with example usage: get(identifier) and returns: None, obj