Returns the state view for an arbitrary block.

        Args:
            block_wrapper (BlockWrapper): The block for which a state
                view is to be returned
            state_view_factory (StateViewFactory): The state view factory
                used to create the StateView object

        Returns:
            StateView object associated with the block

def state_view_for_block(block_wrapper, state_view_factory):
        """
        Returns the state view for an arbitrary block.

        Args:
            block_wrapper (BlockWrapper): The block for which a state
                view is to be returned
            state_view_factory (StateViewFactory): The state view factory
                used to create the StateView object

        Returns:
            StateView object associated with the block
        """
        state_root_hash = \
            block_wrapper.state_root_hash \
            if block_wrapper is not None else None

        return state_view_factory.create_view(state_root_hash)