Could you provide function "createAbstractControl" of dynamic-form-service as Protected?

[begandroide]

I'm submitting a

[ ] Bug / Regression
[X] Feature Request / Proposal

I'm using

NG Dynamic Forms Version: `14.0.1`

[ ] Basic UI
[ ] Bootstrap UI  
[ ] Foundation UI
[ ] Ionic UI
[ ] Kendo UI
[X] Material  
[ ] NG Bootstrap
[ ] Prime NG

Description

Hi! in a need of create custom form controls to dynamic-forms angular material i have the necessity of extend DynamicFormService of core and use some private functions like createAbstractControl.

Why i need it? I face the problem of create groups visually grouped (that has same behaviour, like hidding), but not create two form groups in one.

So, to create my control i need use createAbstractControl, that is private and i cant use it from extension.

If couldn't, how i can do this?