docs: public void registerTenant(String tenantId, DataSource dataSource) {
      ((TenantAwareDataSource) super.getDataSource()).addDataSource(tenantId, dataSource);
      
      if (booted) {
        createTenantSchema(tenantId);
        
        createTenantAsyncJobExecutor(tenantId);
        
        tenantInfoHolder.setCurrentTenantId(tenantId);
        super.postProcessEngineInitialisation();
        tenantInfoHolder.clearCurrentTenantId();
      }
    }