code: public CssStyle getStyle(String iconName) {
  		if (Strings.isNullOrEmpty(iconName)) {
  			return SimpleStyle.EMPTY_STYLE;
  		}
  		String className = this.transformClassName(iconName);
  		if (this.aliases.containsKey(className)) {
  			className = this.aliases.get(className);
  		}
  		return new SimpleStyle(this.preffix + className);
  	}
docs: Gets the {@link CssStyle} of the icon.
  
  @param iconName the icon name
  @return the style