<workflow_chain>
 <chain>
  <type>Hosting Subscription</type>
  <workflow>slapos_accounting_interaction_workflow, slapos_api_invoicing_workflow</workflow>
 </chain>
 <chain>
  <type>Sale Invoice Transaction</type>
  <workflow>slapos_accounting_interaction_workflow</workflow>
 </chain>
 <chain>
  <type>Sale Packing List</type>
  <workflow>slapos_accounting_interaction_workflow</workflow>
 </chain>
 <chain>
  <type>Slave Instance</type>
  <workflow>slapos_accounting_interaction_workflow, slapos_api_invoicing_workflow</workflow>
 </chain>
 <chain>
  <type>Software Instance</type>
  <workflow>slapos_accounting_interaction_workflow, slapos_api_invoicing_workflow</workflow>
 </chain>
 <chain>
  <type>Subscription Item Root Simulation Rule</type>
  <workflow>edit_workflow, rule_validation_workflow</workflow>
 </chain>
</workflow_chain>