return defaultMeta, nil
}

// getRemoteInstanceTransport contains a roundtripper for external (not peers) servers
var remoteInstanceTransport atomic.Value

func setRemoteInstanceTransport(tr http.RoundTripper) {
	remoteInstanceTransport.Store(tr)
}

func getRemoteInstanceTransport() http.RoundTripper {

    x_trace: str = Header(default=..., title="Tracing header"),
):
    return {"message": "Hello World"}
```

...all these parameters are required because the default value is `...` (Ellipsis).

But now it's possible and supported to just omit the default value, as would be done with Pydantic fields, and the parameters would still be required.

✨ For example, this is now supported:

```Python

			}
		}
		var maxUsedPct int
		for _, disk := range zinfo {
			if disk == nil || disk.Total == 0 {
				continue
			}
			available += disk.Total - disk.Used

			// set maxUsedPct to the value from the disk with the least space percentage.
			if pctUsed := int(disk.Used * 100 / disk.Total); pctUsed > maxUsedPct {
				maxUsedPct = pctUsed
			}
		}

		}

		for pname := range allPolicies {
			if _, ok := policyStats[pname]; !ok {
				policyStats[pname] = make([]srPolicy, numSites)
			}

			// if pname is not present in the map, the zero value
			// will be returned.
			pi := sri.Policies[pname]
			policyStats[pname][i] = srPolicy{SRIAMPolicy: pi, DeploymentID: sri.DeploymentID}
		}
		for user := range allUserWPolicies {