src/Services/OrganisationService.php
public function getBalance($organisationId, $from = null, $upTo = null, array $transactionTypes = null)
    {
        return $this->request(new GetOrganisationBalanceRequest($organisationId, $from, $upTo, $transactionTypes));
    }
public function getBalance($organisationId, $from = null, $upTo = null, array $transactionTypes = null)
    {
        return $this->request(new GetOrganisationBalanceRequest($organisationId, $from, $upTo, $transactionTypes));
    }
@param int            $organisationId
@param string|null    $from
@param string|null    $upTo
@param string[]|array $transactionTypes

@return float