Ionic Side-menu and dropdown sub-menu


I am looking at the possibility of implementing a side menu in ionic2 using typescript. What I need is completely different from anything I have read on this forum or the net. I need a side menu with sub menus that drops down when the side menu item is click or tapped. Here is an example:

=> Payments
=> Payment Activity
=> Make A Payment
=> Automatic Payment

=> Account
=> Recent Activities
=> Search Transaction
=> Account Statements

When Payments is tapped the entire sub menu is shown and when it is tapped again it closes.

Can someone please point me to an example of this?

Thanks in advance,

can anyone found solution?