parameters: (child_class_value, index=0)
return_statement: return child_class_value[field]
docstring: Returns the object's value in the form of the parent class at index.
  
      This function effectively casts the child_class_value to the base_class's
      type, but the type-to-cast to is stored in the field at index, and once
      we know the field, we can just return the data.
  
      Args:
        child_class_value: the value to cast
        index: the parent class index
  
      Raises:
        Exception: field at index was not a base-class field.
docstring_summary: Returns the object's value in the form of the parent class at index.
docstring_tokens: Returns the object s value in the form of the parent class at index .
function: def _get_base_subobject(child_class_value, index=0):
      """Returns the object's value in the form of the parent class at index.
  
      This function effectively casts the child_class_value to the base_class's
      type, but the type-to-cast to is stored in the field at index, and once
      we know the field, we can just return the data.
  
      Args:
        child_class_value: the value to cast
        index: the parent class index
  
      Raises:
        Exception: field at index was not a base-class field.
      """
  
      field = child_class_value.type.fields()[index]
      if not field.is_base_class:
          raise Exception("Not a base-class field.")
      return child_class_value[field]
function_tokens: def _get_base_subobject ( child_class_value , index = 0 ) : field = child_class_value . type . fields ( ) [ index ] if not field . is_base_class : raise Exception ( "Not a base-class field." ) return child_class_value [ field ]