docs: public void setMaterial(GVRMaterial material, int passIndex)
      {
          if (passIndex < mRenderPassList.size())
          {
              mRenderPassList.get(passIndex).setMaterial(material);
          }
          else
          {
              Log.e(TAG, "Trying to set material from invalid pass. Pass " + passIndex + " was not created.");
          }
      }