code: public SuperToast setGravity(@Style.GravityStyle int gravity, int xOffset, int yOffset) {
          this.mStyle.gravity = gravity;
          this.mStyle.xOffset = xOffset;
          this.mStyle.yOffset = yOffset;
          return this;
      }
docs: Sets the layout gravity, x, and y offsets for the SuperToast.
  
  @param gravity The desired Gravity
  @param xOffset The desired x (horizontal) offset
  @param yOffset The desired y (vertical) offset
  @return The current SuperToast instance
  
  @see #setGravity(int)