code: public SuperToast setIconResource(@Style.IconPosition int iconPosition,
                                        @DrawableRes int iconResource) {
          this.mStyle.messageIconPosition = iconPosition;
          this.mStyle.messageIconResource = iconResource;
          return this;
      }
docs: Sets the icon position and icon resource of the main TextView.
  The recommended icon position for most applications is
  {@link Style#ICONPOSITION_LEFT}.
  
  @param iconPosition The desired icon position
  @param iconResource The desired icon resource
  @return The current SuperToast instance
  
  @see #setIconPosition(int)
  @see #setIconResource(int)