How to use a private key in this API?

[damlaHolo]

Not sure if I am missing some documentation around this, if I am please point me to the right place.

I need to implement some features to the app I am building, I have managed to use Metaplex Solana.Swift HotAccount to create a wallet, and use its public key to retrieve NFTs. I have not managed to use a private key to, say, retrieve the account mnemonic phrase. Are these functions not available? If not, what should I be using?

I can see that there is a function called "SendSol". It seems to take in an account object presumably attached with private key? How does this process work? Where is the documentation I can use to investigate?

[ajamaica]

Use the HotAccount as an example and expand it if you want. Its impossible to retrieve a mnemonic phrase from a private key.