SAP UI5 Dynamically switch between fragments - sapui5

Question

How do I dynamically switch between two fragments using click / press event?
I have the following XML fragment which in turn has nested two fragments:
<core:FragmentDefinition
xmlns="sap.m"
xmlns:core="sap.ui.core">
<IconTabFilter
id="containerFrag"
text="{name}"
key="{id}">
<dependents>
<core:Fragment
fragmentName="com.example.fragments.fragment1"
type="XML" />
<core:Fragment
fragmentName="com.example.fragments.fragment2"
type="XML" />
</dependents>
</IconTabFilter>
</core:FragmentDefinition>
Assuming each fragment has a button who's handler has the following
buttonPress: function(oEvent) {
let oView = this.getView();
let showFrag1 = oEvent.getParameter("arguments"); //showFrag1 = true / false
let fragToShow = showFrag1 ? oView.byId("frag1Id").clone() : oView.byId("frag2Id").clone()
let container = oView.byId("containerFrag");
container.destroyContent();
container.addContent(fragToShow);
}
When I debug using chrome, fragToShow updates with the correct frag depending on the showFrag1 argument, but the view doesn't get updated - container.addContent(fragToShow) seems to have no effect except if I reload the page

Answer 1

Not sure why this works but I had to go one up from the container and insert the new fragment there like so:
let container = oView.byId("containerFrag");
container.getParent().destroyContent();
container.getParent().addContent(fragToShow);
This example also helped: https://ui5.sap.com/#/entity/sap.ui.layout.form.Form/sample/sap.ui.layout.sample.Form354 - though they use removeAllContent and insertContent, both seem to work just fine.
Thanks #D. Seah and #Ethan Jewett