Function spl_governance::state::realm_config::get_realm_config_data_for_realm

pub fn get_realm_config_data_for_realm(
    program_id: &Pubkey,
    realm_config_info: &AccountInfo<'_>,
    realm: &Pubkey
) -> Result<RealmConfigAccount, ProgramError>

If the account exists then deserializes it into RealmConfigAccount struct and checks the owner program and the Realm it belongs to If the account doesn’t exist then it checks its address is derived from the given owner program and Realm and returns default RealmConfigAccount