def _call(self, payload):
        """Make API call with error handling."""
        res = session.post(self.url, json=payload, allow_redirects=False)
            # Handle 302 redirect (likely auth issue)
        if res.status_code == 302:
            try:
                self._auth()
                res = session.post(self.url, json=payload, allow_redirects=False)
            except Exception as e:
                raise AuthenticationError(
                    "Authentication failed during re-attempt. "
                    "Please check your credentials or connection."
                ) from e
        res.raise_for_status()
        data = res.json()
        if not data.get('success'):
            raise Exception(data.get('output', "Unknown API error."))
        return data.get('output')

    def _auth(self):
        username = self.username or 'admin'
        password = self.password or 'admin'
        res = session.get('http://192.168.30.251:8000/ivoryos/', allow_redirects=False)
        if res.status_code == 200:
            return
        else:
            session.post(
                'http://192.168.30.251:8000/ivoryos/auth/login',
                data={"username": username, "password": password}
            )
            res = session.get('http://192.168.30.251:8000/ivoryos/', allow_redirects=False)
            if res.status_code != 200:
                raise Exception("Authentication failed")

    # @prefect.task
    def dose_solvent(self,
                     solvent_name: Solvent = Solvent.Methanol,
                     amount_in_ml: float = 5,
                     rate_ml_per_minute: float = 1
                     ):
        print("dosing liquid")
        ...

import requests
from typing import List, Optional

session = requests.Session()

# Generated Enum definitions
from enum import Enum

class Solvent(Enum):
    Methanol = "Methanol"
    Ethanol = "Ethanol"
    Acetone = "Acetone"
    DMF = "dmf"

...


class Sdl:
    """Auto-generated API client for sdl operations."""
    url = "http://127.0.0.1:8000/ivoryos/instruments/deck.sdl"

    ...

    def dose_solvent(self, solvent_name: Optional[community.solvent.Solvent] = <Solvent.Methanol: 'Methanol'>, amount_in_ml: float = 5, rate_ml_per_minute: float = 1):
        payload = {"hidden_name": "dose_solvent"}
        payload["solvent_name"] = solvent_name
        payload["amount_in_ml"] = amount_in_ml
        payload["rate_ml_per_minute"] = rate_ml_per_minute
        return self._call(payload)