How can I create and run a notebook task as a job in Databricks using the Go SDK?
1. First, you need to install the Databricks Go SDK. You can do this by running the following command:

```go
go get github.com/databricks/databricks-sdk-go
```

2. Import the necessary packages in your Go code:

```go
package main

import (
    "context"
    "github.com/databricks/databricks-sdk-go"
    "github.com/databricks/databricks-sdk-go/service/jobs"
)
```

3. Create a new `WorkspaceClient` instance:

```go
w := databricks.Must(databricks.NewWorkspaceClient())
```

4. Create a `NotebookTask` instance with the workspace path of the notebook:

```go
nt := jobs.NotebookTask{
    NotebookPath: askFor("Workspace path of the notebook to run:"),
}
```

5. Create a new job with the `NotebookTask`:

```go
jobToRun, err := w.Jobs.Create(ctx, jobs.CreateJob{
    Name: askFor("Some short name for the job:"),
    Tasks: []jobs.JobTaskSettings{
        {
            Description: askFor("Some short description for the job:"),
            TaskKey: askFor("Some key to apply to the job's tasks:"),
            ExistingClusterId: askFor("ID of the existing cluster in the workspace to run the job on:"),
            NotebookTask: &nt,
        },
    },
})
```

6. Run the job:

```go
runningJob, err := w.Jobs.RunNow(ctx, jobs.RunNow{
    JobId: jobToRun.JobId,
})
```

7. Wait for the job to complete and print the results:

```go
jobRun, err := runningJob.Get()
fmt.Printf("View the job run results at %s/#job/%d/run/%d\n", w.Config.Host, jobRun.JobId, jobRun.RunId)
```

Here's the complete code example:

```go
package main

import (
    "bufio"
    "context"
    "fmt"
    "os"
    "strings"
    "github.com/databricks/databricks-sdk-go"
    "github.com/databricks/databricks-sdk-go/service/jobs"
)

func main() {
    w := databricks.Must(databricks.NewWorkspaceClient())
    ctx := context.Background()
    nt := jobs.NotebookTask{
        NotebookPath: askFor("Workspace path of the notebook to run:"),
    }
    jobToRun, err := w.Jobs.Create(ctx, jobs.CreateJob{
        Name: askFor("Some short name for the job:"),
        Tasks: []jobs.JobTaskSettings{
            {
                Description: askFor("Some short description for the job:"),
                TaskKey: askFor("Some key to apply to the job's tasks:"),
                ExistingClusterId: askFor("ID of the existing cluster in the workspace to run the job on:"),
                NotebookTask: &nt,
            },
        },
    })
    if err!= nil {
        panic(err)
    }
    fmt.Printf("Now attempting to run the job at %s/#job/%d, please wait...\n", w.Config.Host, jobToRun.JobId)
    runningJob, err := w.Jobs.RunNow(ctx, jobs.RunNow{
        JobId: jobToRun.JobId,
    })
    if err!= nil {
        panic(err)
    }
    jobRun, err := runningJob.Get()
    if err!= nil {
        panic(err)
    }
    fmt.Printf("View the job run results at %s/#job/%d/run/%d\n", w.Config.Host, jobRun.JobId, jobRun.RunId)
}

// Get job settings from the user.
func askFor(prompt string) string {
    var s string
    r := bufio.NewReader(os.Stdin)
    for {
        fmt.Fprint(os.Stdout, prompt+" ")
        s, _ = r.ReadString('\n')
        if s!= "" {
            break
        }
    }
    return strings.TrimSpace(s)
}
```

This code creates and runs a notebook task as a job in Databricks using the Go SDK.