code: def valid(self, value, include_name=True):
  		
  
  		# Call the parent valid method and return the result
  		return super(Tree, self).valid(value, include_name and [self._name] or [])
docs: Valid
  
  		Checks if a value is valid based on the instance's values
  
  		Arguments:
  			value {mixed} -- The value to validate
  			include_name {bool} -- If true, Tree's name will be prepended to
  				all error keys
  
  		Returns:
  			bool