Creating a utility function that can help find if an extension exists in a particular Questionnaire.Item

[kunjan8794]

We can create a utility function that can be useful for finding if the Questionnaire.Item has a particular extension.

It can go like a simple function for example, named --> hasExtension(extensionName) which can return a boolean value showing whether the extension exists.

This can significantly reduce redundant code for finding extensions' existence(!) maybe that would be written for every possible validation check

@jingtang10 @joiskash

[kunjan8794]

@jingtang10 has suggested that the return value can be the extension itself or null - that's better it seems

[jingtang10]

great idea!

might be worth looking into kotlin extension function

[kunjan8794]

@jingtang10 Looking at the link, it seems maybe we can create an extension function for the class Questionnaire.Item ?