## Delete Pipeline Files Metadata

`pipelines().metadata().deleteAll(MetadataDeleteAllParamsparams = MetadataDeleteAllParams.none(), RequestOptionsrequestOptions = RequestOptions.none())`

**delete** `/api/v1/pipelines/{pipeline_id}/metadata`

Delete metadata for all files in a pipeline.

### Parameters

- `MetadataDeleteAllParams params`

  - `Optional<String> pipelineId`

### Example

```java
package com.llamacloud_prod.api.example;

import com.llamacloud_prod.api.client.LlamaCloudClient;
import com.llamacloud_prod.api.client.okhttp.LlamaCloudOkHttpClient;
import com.llamacloud_prod.api.models.pipelines.metadata.MetadataDeleteAllParams;

public final class Main {
    private Main() {}

    public static void main(String[] args) {
        LlamaCloudClient client = LlamaCloudOkHttpClient.fromEnv();

        client.pipelines().metadata().deleteAll("182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e");
    }
}
```