code: public SuperToast setTextSize(@Style.TextSize int textSize) {
          if (textSize < Style.TEXTSIZE_VERY_SMALL) {
              Log.e(getClass().getName(), "SuperToast text size cannot be below 12.");
              this.mStyle.messageTextSize = Style.TEXTSIZE_VERY_SMALL;
              return this;
          } else if (textSize > Style.TEXTSIZE_VERY_LARGE) {
              Log.e(getClass().getName(), "SuperToast text size cannot be above 20.");
              this.mStyle.messageTextSize = Style.TEXTSIZE_VERY_LARGE;
              return this;
          }
          this.mStyle.messageTextSize = textSize;
          return this;
      }
docs: Sets the text size of the main TextView. This value cannot be below 12.
  
  @param textSize The desired text size
  @return The current SuperToast instance