Not converting to Segwit nested in P2SH

[pekatete]

Hi - this does not convert a Segwit Bech32 address to a Segwit nested in P2SH.
Should convert:
from (Segwit Bech32): bc1qcash96s5jqppzsp8hy8swkggf7f6agex98an7h
to (Segwit nested in P2SH): 3NULL3ZCUXr7RDLxXeLPDMZDZYxuaYkCnG

However the tests seem to assert the Bech32 equals the Bech32 (rather than the P2SH).

[DesWurstes]

This library just encodes and decodes Bech32. It intentionally doesn't convert them to Base58, since it's not possible to spend Bech32 funds from a P2SH address and vice versa. If I added that, probably someone would lose their funds.

[pekatete]

My usecase was not to convert the Bech 32 address to a Base58 address in order to use the (Base58) address for spending / collecting but to query a node for the transactions on the Base58 address (thus Bech 32 as the latter is not query-able).
I can convert a base 58 to a Bech 32 however that also seems off, i.e:
3NULL3ZCUXr7RDLxXeLPDMZDZYxuaYkCnG returns bc1qye5fnk4zr9rx57ua7qksgq3hqc07k3zxld709m rather than bc1qcash96s5jqppzsp8hy8swkggf7f6agex98an7h