@utilities.arguments_not_none<EOL><INDENT>def set_items_sequential(self, sequential):<DEDENT>
<EOL>if self.get_items_sequential_metadata().is_read_only():<EOL><INDENT>raise errors.NoAccess()<EOL><DEDENT>if not self._is_valid_boolean(sequential):<EOL><INDENT>raise errors.InvalidArgument()<EOL><DEDENT>self._my_map['<STR_LIT>'] = sequential<EOL>
Sets the items sequential flag.

        arg:    sequential (boolean): ``true`` if the items are taken
                sequentially, ``false`` if the items can be skipped and
                revisited
        raise:  InvalidArgument - ``sequential`` is invalid
        raise:  NoAccess - ``Metadata.isReadOnly()`` is ``true``
        *compliance: mandatory -- This method must be implemented.*