How to use a bonita connector when creating a process programatically?

Hi

We are creating a process programatically, out-of-the box by using the bonita REST API via the bonita-client available in:

<bonita.bpm.version>7.0.0</bonita.bpm.version>
..
<dependency>
<groupId>org.bonitasoft.engine</groupId>
<artifactId>bonita-client</artifactId>
<version>${bonita.bpm.version}</version>
</dependency>

We are able to create and deploy a simple process (and execute it via the bonita portal). However now we are trying to programatically create a service task with a REST connector call. To to it, we use:

ConnectorDefinitionBuilder connectorBuilder = automatctask.addConnector("CallRestDATA", "rest-get", "1.0.0", ConnectorEvent.ON_ENTER);
connectorBuilder.ignoreError();

However we always get an error, and in bonita portal we can see the following message:

The Process cannot be enabled.
Connectors must be resolved before enabling the Process.

Intuitively, we have tried to instantiate a ConnectorDescriptor but we don't know to link with the task. We couldn't find in the documentation any example. Do you have any hint?

Thanks in advance.