Returns the organisation and every organisation beneath it, one page at a time. Nodes come back ordered so that an organisation always appears after the one above it, which means any page you have received so far rebuilds into a valid tree. The organisation must be the authenticated organisation or a descendant of it.

Paging is forward only. Read hasMore on each reply; while it is true, send the nextCursor value back as the cursor query parameter to fetch the next page.