<Task name="PrepareContacts">
  <Task source="RemoveInvalidContacts"/>
  <Task source="GenerateInteractionSolveTags:GeometryContact"/>
	
  <Task source="PreparePPGS" enable="false"/>
	
  <Task source="AllocateConstraintData : Contact"/>
  <Task source="CalculateJacobians : Contact"/>
  <Task source="CalculateGMInv : Contact"/>
</Task>
