Tree

<bpa-tree
  :data="treeData"
/>

treeData: [
  {
    id: 1,
    label: "A",
    children: [
      {
        id: 4,
        label: "D"
      },
      {
        id: 5,
        label: "E"
      }
    ]
  },
  {
    id: 2,
    label: "B",
    children: [
      {
        id: 6,
        label: "F"
      },
      {
        id: 7,
        label: "G",
        children: [
          {
            id: 8,
            label: "H"
          },
          {
            id: 9,
            label: "I"
          }
        ]
      }
    ]
  },
  {
    id: 3,
    label: "C",
  }
]

<bpa-tree
  :data="treeData"
  show-checkbox
/>

<bpa-tree
  :data="treeData"
  default-expand-all
/>