default MutableAccount getSenderAccount(final MessageFrame frame) {
    return getAccount(frame.getSenderAddress());
  }
Retrieves the senders account, returning a modifiable object (whose updates are accumulated by
this updater).

@param frame the current message frame.
@return the account {@code address}, or {@code null} if the account does not exist.
evm/src/main/java/org/hyperledger/besu/evm/worldstate/WorldUpdater.java