> ## Documentation Index
> Fetch the complete documentation index at: https://docs.crossmint.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Approval

> Kotlin Data Class

**Data Class**

```kotlin theme={null}
data class Approval(val signer: String, val signature: ApprovalSignature, val metadata: ApprovalMetadata? = null)
```

## Constructors

```kotlin theme={null}
constructor(signer: String, signature: ApprovalSignature, metadata: ApprovalMetadata? = null)
```

## Properties

| Property    | Type                | Description |
| ----------- | ------------------- | ----------- |
| `metadata`  | `ApprovalMetadata?` | -           |
| `signature` | `ApprovalSignature` | -           |
| `signer`    | `String`            | -           |