code: public void onBindCell(int offset, int position, boolean showFromEnd) {
          if (!mIsExposed && serviceManager != null) {
              ExposureSupport exposureSupport = serviceManager.getService(ExposureSupport.class);
              if (exposureSupport != null) {
                  mIsExposed = true;
                  exposureSupport.onExposure(this, offset, position);
              }
          }
      }
docs: Don't change card's mCells in binding process!
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