docs: public static float[] getBoundingSize(GVRMesh mesh) {
          final float [] dim = new float[3];
          final float [] vertices = mesh.getVertices();
          final int vsize = vertices.length;
          float minx = Integer.MAX_VALUE;
          float miny = Integer.MAX_VALUE;
          float minz = Integer.MAX_VALUE;
          float maxx = Integer.MIN_VALUE;
          float maxy = Integer.MIN_VALUE;
          float maxz = Integer.MIN_VALUE;
  
          for (int i = 0; i < vsize; i += 3) {
              if (vertices[i] < minx) minx = vertices[i];
              if (vertices[i] > maxx) maxx = vertices[i];
  
              if (vertices[i + 1] < miny) miny = vertices[i + 1];
              if (vertices[i + 1] > maxy) maxy = vertices[i + 1];
  
              if (vertices[i + 2] < minz) minz = vertices[i + 2];
              if (vertices[i + 2] > maxz) maxz = vertices[i + 2];
          }
  
          dim[0] = maxx - minx;
          dim[1] = maxy - miny;
          dim[2] = maxz - minz;
  
          return dim;
      }