Function mpl_token_metadata::processor::process_update_metadata_accounts_v2

pub fn process_update_metadata_accounts_v2(
    program_id: &Pubkey, 
    accounts: &[AccountInfo<'_>], 
    optional_data: Option<DataV2>, 
    update_authority: Option<Pubkey>, 
    primary_sale_happened: Option<bool>, 
    is_mutable: Option<bool>
) -> ProgramResult