Having difficulties with the public method and return types lecture

Im having difficulties in understanding this lecture…could you please help me out with it.I am not getting to what you are doing and more specifically to why are you doing that.

Hello Tanmay, welcome to the community.

Could you perhaps copy/paste the code you are specifically having difficulties with, it will be easier to respond with an example, and if you provide the code in question your response will be in context.

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