code: public void translate(float x, float y, float z) {
          getTransform().translate(x, y, z);
          if (mTransformCache.translate(x, y, z)) {
              onTransformChanged();
          }
      }
docs: Move the object, relative to its current position.
  
  Modify the tranform's current translation by applying translations on all
  3 axes.
  
  @param x
  'X' delta
  @param y
  'Y' delta
  @param z
  'Z' delta