Migrate From Activity to Camunda

I have a custom application using Spring Framework + activiti.
In process of miigration “Activiti 5.x + Spring Framework” to “Camunda 7.14 + Spring Framework”
I have configuration WFDataSourceConfig.java that extends org.activiti.spring.boot.AbstractProcessEngineAutoConfiguration.
The WFDataSourceConfig is @Configuration and created custom datasource beans.
I have removed extension AbstractProcessEngineAutoConfiguration and now the class not get called, What should be used instead of “AbstractProcessEngineAutoConfiguration” with camunda?
Im trying to start up application and getting “Unable to create initial connection of pool” … and seems that WFDataSourceConfig never been called… How to created custom configuration with Camunda ? Any example please. Thanks a lot