mindmap
        root
            child1((Circle))
                grandchild 1
                grandchild 2
            child2(Round rectangle)
                grandchild 3
                grandchild 4
            child3[Square]
                grandchild 5
                ::icon(mdi mdi-fire)
                gc6((grand
child 6))
                ::icon(mdi mdi-fire)
                gc7((grand
grand
child 8))

mindmap
            root[A root with a long text that wraps to keep the node size in check]