/// <inheritdoc /> public override string ToString() { return($"Tree - Octant: {octant?.ToString() ?? "null"}, " + $"TNW: {childTrees[0]?.ToString() ?? "null"}, TNE: {childTrees[1]?.ToString() ?? "null"}, " + $"TSE: {childTrees[2]?.ToString() ?? "null"}, TSW: {childTrees[3]?.ToString() ?? "null"}, " + $"BNW: {childTrees[4]?.ToString() ?? "null"}, BNE: {childTrees[5]?.ToString() ?? "null"}, " + $"BSE: {childTrees[6]?.ToString() ?? "null"}, BSW: {childTrees[7]?.ToString() ?? "null"}"); }