parameters: (self, model_class, key_name, key_value, property_name)
docstring: Constructor for Storage.
  
      Args:
        model: db.Model, model class
        key_name: string, key name for the entity that has the credentials
        key_value: string, key value for the entity that has the credentials
        property_name: string, name of the property that is an CredentialsProperty
docstring_summary: Constructor for Storage.
docstring_tokens: Constructor for Storage .
function: def __init__(self, model_class, key_name, key_value, property_name):
      """Constructor for Storage.
  
      Args:
        model: db.Model, model class
        key_name: string, key name for the entity that has the credentials
        key_value: string, key value for the entity that has the credentials
        property_name: string, name of the property that is an CredentialsProperty
      """
      self.model_class = model_class
      self.key_name = key_name
      self.key_value = key_value
      self.property_name = property_name
function_tokens: def __init__ ( self , model_class , key_name , key_value , property_name ) : self . model_class = model_class self . key_name = key_name self . key_value = key_value self . property_name = property_name