public BottomNavigationItem setInactiveIconResource(@DrawableRes int mInactiveIconResource) {
        this.mInactiveIconResource = mInactiveIconResource;
        inActiveIconAvailable = true;
        return this;
    }
By default library will switch the color of icon provided (in between active and in-active icons)
This method is used, if people need to set different icons for active and in-active modes.

@param mInactiveIconResource resource for the in-active icon.
@return this, to allow builder pattern
common/src/main/java/com/sxjs/common/widget/bottomnavigation/BottomNavigationItem.java