Missing generated classes

I am running Quicktype version 15.0.258. and trying to convert the Plaid JSON API to C# classes.

I have a reproducible example available at https://github.com/oconnor0/quicktype-bug/

I have 3 JSON files in a directory and run

quicktype --lang cs --namespace Plaid --out Plaid.cs .

to generate C# code. The resulting code is missing the top-level class for one of the JSON files. And one of the renamed "Options" types is using the wrong name prefix.

`AccountsGet.Request.json`:

```
{
"client_id": "1234abcd5678efgh90ij",
"secret": "1234abcd5678efgh90ij",
"access_token": "1234abcd5678efgh90ij"
}
```

`AuthGet.Request.json`:

```
{
"client_id": "1234abcd5678efgh90ij",
"secret": "1234abcd5678efgh90ij",
"access_token": "1234abcd5678efgh90ij",
"options": {
"account_ids": ["abc", "def", "ghi"]
}
}
```

`TransactionsGet.Request.json`:

```
{
"client_id": "1234abcd5678efgh90ij",
"secret": "1234abcd5678efgh90ij",
"access_token": "1234abcd5678efgh90ij",
"start_date": "2020-01-01",
"end_date": "2020-01-31",
"options": {
"account_ids": ["abc", "def", "ghi"],
"count": 100,
"offset": 0
}
}
```

The relevant portion of `Plaid.cs` is:

```
public partial class AuthGetRequest
{
[JsonProperty("client_id")]
public string ClientId { get; set; }

[JsonProperty("secret")]
public string Secret { get; set; }

[JsonProperty("access_token")]
public string AccessToken { get; set; }

[JsonProperty("options", NullValueHandling = NullValueHandling.Ignore)]
public AccountsGetRequestOptions Options { get; set; }
}

public partial class AccountsGetRequestOptions
{
[JsonProperty("account_ids")]
public string[] AccountIds { get; set; }
}

public partial class TransactionsGetRequest
{
[JsonProperty("client_id")]
public string ClientId { get; set; }

[JsonProperty("secret")]
public string Secret { get; set; }

[JsonProperty("access_token")]
public string AccessToken { get; set; }

[JsonProperty("start_date")]
public DateTimeOffset StartDate { get; set; }

[JsonProperty("end_date")]
public DateTimeOffset EndDate { get; set; }

[JsonProperty("options")]
public TransactionsGetRequestOptions Options { get; set; }
}

public partial class TransactionsGetRequestOptions
{
[JsonProperty("account_ids")]
public string[] AccountIds { get; set; }

[JsonProperty("count")]
public long Count { get; set; }

[JsonProperty("offset")]
public long Offset { get; set; }
}
```

I expect an `AccountsGetRequest` class. I expect `AuthGetRequest.Options` to be of type `AuthGetRequestOptions` not `AccountsGetRequestOptions`.