The hypothetical situation is-
Dying deposition is the statement of a person on oath, recorded by a magistrate.

In the presence of the accused or his lawyer.
The lawyer is allowed to cross-examine the witness.
This procedure is not followed in India.
Such a situation is so-called hypothetical as it is practically very difficult to achieve or virtually impossible.
Police inquest
Magistrate inquest
Dying declaration
Dying deposition