How to output/insert all available class methods/arguments in Android Studio when developing on Flutter?

Question

android studio

I am learning Flutter until I know all the arguments/methods of different classes.
Sometimes Android Studio gives me a hint, and sometimes you can even click on this hint and all possible parameters / arguments are automatically inserted ....

How to make it always inserted into the code for me, and then I just deleted / edited what I needed.
type of

TextButton.icon(onPressed: (onPressed), icon: Icon, label: label)

Answer 1

when there are mandatory parameters, it will offer 2 options, without parameters and only with mandatory ones, in other cases it will not