docs: private boolean areaAreaPredicates_(int half_edge, int id_a, int id_b) {
  		boolean bRelationKnown = true;
  
  		if (m_perform_predicates[MatrixPredicate.InteriorInterior]) {
  			interiorAreaInteriorArea_(half_edge, id_a, id_b);
  			bRelationKnown &= isPredicateKnown_(
  					MatrixPredicate.InteriorInterior);
  		}
  
  		if (m_perform_predicates[MatrixPredicate.InteriorBoundary]) {
  			interiorAreaBoundaryArea_(half_edge, id_a,
  					MatrixPredicate.InteriorBoundary);
  			bRelationKnown &= isPredicateKnown_(
  					MatrixPredicate.InteriorBoundary);
  		}
  
  		if (m_perform_predicates[MatrixPredicate.InteriorExterior]) {
  			interiorAreaExteriorArea_(half_edge, id_a, id_b,
  					MatrixPredicate.InteriorExterior);
  			bRelationKnown &= isPredicateKnown_(
  					MatrixPredicate.InteriorExterior);
  		}
  
  		if (m_perform_predicates[MatrixPredicate.BoundaryInterior]) {
  			interiorAreaBoundaryArea_(half_edge, id_b,
  					MatrixPredicate.BoundaryInterior);
  			bRelationKnown &= isPredicateKnown_(
  					MatrixPredicate.BoundaryInterior);
  		}
  
  		if (m_perform_predicates[MatrixPredicate.BoundaryBoundary]) {
  			boundaryAreaBoundaryArea_(half_edge, id_a, id_b);
  			bRelationKnown &= isPredicateKnown_(
  					MatrixPredicate.BoundaryBoundary);
  		}
  
  		if (m_perform_predicates[MatrixPredicate.BoundaryExterior]) {
  			boundaryAreaExteriorArea_(half_edge, id_a, id_b,
  					MatrixPredicate.BoundaryExterior);
  			bRelationKnown &= isPredicateKnown_(
  					MatrixPredicate.BoundaryExterior);
  		}
  
  		if (m_perform_predicates[MatrixPredicate.ExteriorInterior]) {
  			interiorAreaExteriorArea_(half_edge, id_b, id_a,
  					MatrixPredicate.ExteriorInterior);
  			bRelationKnown &= isPredicateKnown_(
  					MatrixPredicate.ExteriorInterior);
  		}
  
  		if (m_perform_predicates[MatrixPredicate.ExteriorBoundary]) {
  			boundaryAreaExteriorArea_(half_edge, id_b, id_a,
  					MatrixPredicate.ExteriorBoundary);
  			bRelationKnown &= isPredicateKnown_(
  					MatrixPredicate.ExteriorBoundary);
  		}
  
  		return bRelationKnown;
  	}