How to hide root node but child node.

[livinglegends]

Hi,

In my tree panel, I have four children under root node like below.

Root Node
 |
 |______Child One
            |
            |______________C1
            |
            |______________C2
 |
 |______Child Two
            |
            |______________C1
            |
             |______________C2
 |
 |______Child Three
            |
            |______________C1
            |
             |______________C2

But, I want to hide root node but not child node like this

 Child One
            |
            |______________C1
            |
             |______________C2
 Child Two
            |
            |______________C3
            |
             |______________C4
 Child Three
            |
            |______________C5
            |
             |______________C6

[Graveworm]

rootVisible: false