How to use the parso.utils.split_lines function in parso

def _extract_range_jedi_0_11_1(self, definition):
        from parso.utils import split_lines
        # get the scope range
        try:
            if definition.type in ['class', 'function']:
                tree_name = definition._name.tree_name
                scope = tree_name.get_definition()
                start_line = scope.start_pos[0] - 1
                start_column = scope.start_pos[1]
                # get the lines
                code = scope.get_code(include_prefix=False)
                lines = split_lines(code)
                # trim the lines
                lines = '\n'.join(lines).rstrip().split('\n')
                end_line = start_line + len(lines) - 1
                end_column = len(lines[-1]) - 1
            else:
                symbol = definition._name.tree_name
                start_line = symbol.start_pos[0] - 1
                start_column = symbol.start_pos[1]
                end_line = symbol.end_pos[0] - 1
                end_column =  symbol.end_pos[1]
            return {
                'start_line': start_line,
                'start_column': start_column,
                'end_line': end_line,
                'end_column': end_column
            }

def close(self):
        while self._tos is not None:
            self._close_tos()

        # Add an endmarker.
        try:
            last_leaf = self._module.get_last_leaf()
            end_pos = list(last_leaf.end_pos)
        except IndexError:
            end_pos = [1, 0]
        lines = split_lines(self.prefix)
        assert len(lines) > 0
        if len(lines) == 1:
            end_pos[1] += len(lines[0])
        else:
            end_pos[0] += len(lines) - 1
            end_pos[1] = len(lines[-1])

        endmarker = EndMarker('', tuple(end_pos), self.prefix + self._last_prefix)
        endmarker.parent = self._module
        self._module.children.append(endmarker)

new_nodes.pop()
                new_prefix = ''
            else:
                assert new_nodes
                tos.add_child_node(suite_tos)
                working_stack = new_working_stack
                had_valid_suite_last = True

        if new_nodes:
            if not _ends_with_newline(new_nodes[-1].get_last_leaf()) and not had_valid_suite_last:
                p = new_nodes[-1].get_next_leaf().prefix
                # We are not allowed to remove the newline at the end of the
                # line, otherwise it's going to be missing. This happens e.g.
                # if a bracket is around before that moves newlines to
                # prefixes.
                new_prefix = split_lines(p, keepends=True)[0]

            if had_valid_suite_last:
                last = new_nodes[-1]
                if last.type == 'decorated':
                    last = last.children[-1]
                if last.type in ('async_funcdef', 'async_stmt'):
                    last = last.children[-1]
                last_line_offset_leaf = last.children[-2].get_last_leaf()
                assert last_line_offset_leaf == ':'
            else:
                last_line_offset_leaf = new_nodes[-1].get_last_leaf()
            tos.add_tree_nodes(
                prefix, new_nodes, line_offset, last_line_offset_leaf,
            )
            prefix = new_prefix
            self._prefix_remainder = ''

def end_pos(self):
        lines = split_lines(self.string)
        if len(lines) > 1:
            return self.start_pos[0] + len(lines) - 1, 0
        else:
            return self.start_pos[0], self.start_pos[1] + len(self.string)

if error_recovery and start_symbol != 'file_input':
            raise NotImplementedError("This is currently not implemented.")

        if cache and path is not None:
            module_node = load_module(self._hashed, path, cache_path=cache_path)
            if module_node is not None:
                return module_node

        if code is None:
            with open(path, 'rb') as f:
                code = f.read()

        code = python_bytes_to_unicode(code)

        lines = split_lines(code, keepends=True)
        if diff_cache:
            if self._diff_parser is None:
                raise TypeError("You have to define a diff parser to be able "
                                "to use this option.")
            try:
                module_cache_item = parser_cache[self._hashed][path]
            except KeyError:
                pass
            else:
                module_node = module_cache_item.node
                old_lines = module_cache_item.lines
                if old_lines == lines:
                    return module_node

                new_node = self._diff_parser(
                    self._pgen_grammar, self._tokenizer, module_node

if error_recovery and start_symbol != 'file_input':
            raise NotImplementedError("This is currently not implemented.")

        if cache and path is not None:
            module_node = load_module(self._hashed, path, cache_path=cache_path)
            if module_node is not None:
                return module_node

        if code is None:
            with open(path, 'rb') as f:
                code = f.read()

        code = python_bytes_to_unicode(code)

        lines = split_lines(code, keepends=True)
        if diff_cache:
            if self._diff_parser is None:
                raise TypeError("You have to define a diff parser to be able "
                                "to use this option.")
            try:
                module_cache_item = parser_cache[self._hashed][path]
            except KeyError:
                pass
            else:
                module_node = module_cache_item.node
                old_lines = module_cache_item.lines
                if old_lines == lines:
                    return module_node

                new_node = self._diff_parser(
                    self._pgen_grammar, self._tokenizer, module_node

def get_start_pos_of_prefix(self):
        """
        Basically calls :py:meth:`parso.tree.NodeOrLeaf.get_start_pos_of_prefix`.
        """
        # TODO it is really ugly that we have to override it. Maybe change
        #   indent error leafs somehow? No idea how, though.
        previous_leaf = self.get_previous_leaf()
        if previous_leaf is not None and previous_leaf.type == 'error_leaf' \
                and previous_leaf.token_type in ('INDENT', 'DEDENT', 'ERROR_DEDENT'):
            previous_leaf = previous_leaf.get_previous_leaf()

        if previous_leaf is None:  # It's the first leaf.
            lines = split_lines(self.prefix)
            # + 1 is needed because split_lines always returns at least [''].
            return self.line - len(lines) + 1, 0  # It's the first leaf.
        return previous_leaf.end_pos

def get_start_pos_of_prefix(self):
        """
        Basically calls :py:meth:`parso.tree.NodeOrLeaf.get_start_pos_of_prefix`.
        """
        # TODO it is really ugly that we have to override it. Maybe change
        #   indent error leafs somehow? No idea how, though.
        previous_leaf = self.get_previous_leaf()
        if previous_leaf is not None and previous_leaf.type == 'error_leaf' \
                and previous_leaf.token_type in ('INDENT', 'DEDENT', 'ERROR_DEDENT'):
            previous_leaf = previous_leaf.get_previous_leaf()

        if previous_leaf is None:  # It's the first leaf.
            lines = split_lines(self.prefix)
            # + 1 is needed because split_lines always returns at least [''].
            return self.line - len(lines) + 1, 0  # It's the first leaf.
        return previous_leaf.end_pos

def add_to_pos(string):
        lines = split_lines(string)
        l = len(lines[-1])
        if len(lines) > 1:
            start_pos[0] += len(lines) - 1
            start_pos[1] = l
        else:
            start_pos[1] += l