#[derive(ShankAccount)]
pub struct Metadata {
    pub key: Key,
    pub update_authority: Pubkey,
    pub mint: Pubkey,
    pub data: Data,
    // Immutable, once flipped, all sales of this metadata are considered secondary.
    pub primary_sale_happened: bool,
    // Whether or not the data struct is mutable, default is not
    pub is_mutable: bool,
    /// nonce for easy calculation of editions, if present
    pub edition_nonce: Option<u8>,
    /// Since we cannot easily change Metadata, we add the new DataV2 fields here at the end.
    pub token_standard: Option<TokenStandard>,
    /// Collection
    pub collection: Option<Collection>,
    /// Uses
    pub uses: Option<Uses>,
}