Creates a CamundaClient with the given authentication method. <p>When connecting to a Camunda instance, this application assumes that the following e

Creates a ZeebeClient with the given authentication method. <p>When connecting to a Camunda instance, this application assumes that the following env

Completes the job with the given result @param job the job to complete @param result the result to submit

Deduct the credit for the given customer and the given amount @param customerId @param amount @param credit @return the open order amount

Get the current customer credit @param customerId @return the current credit of the given customer

Completes the transaction by releasing the given transactionId @param transactionId the ID of the transaction to be completed @throws IllegalStateExc

Creates a transactionId that is guaranteed to be available @return the transactionId

Delays the job with the given backoff @param job the job to delay @param backoff the backoff after which the job will be available again

Checks if a transaction id is already present and creates one if not @param job the job that requires the transaction id @return the transaction id f

Returns the current state of a running transaction @param transactionId the id that identifies the transaction @return the transaction result @throws