code: private int getIncreasesEdges(Collection<KamEdge> edges) {
          int count = 0;
          for (KamEdge edge : edges) {
              if (edge.getRelationshipType() == RelationshipType.INCREASES
                      || edge.getRelationshipType() == RelationshipType.DIRECTLY_INCREASES) {
                  count++;
              }
          }
          return count;
      }
docs: returns number of inceases and directly_increases edges.
  @param edges
  @return