[Documentation] Improve with examples how to use some API | DOCS

[MindfulLearner]

I've saw already an issue about this Issue, but still needs some improvements.

this one doesn't have an example. And i've found out how to use it with stackoverflow

Problem to solve

People understand better how to use features if we have some examples.

Proposed solution

I propose to put examples where we need it.

tag = "h2"