code: private IBlockIconProvider getWallIconProvider()
  	{
  		return (state, side) -> {
  			if (side == EnumFacing.SOUTH || (side == EnumFacing.WEST && WallComponent.isCorner(state)))
  				return insideIcon;
  			return defaultIcon;
  		};
  	}
docs: Gets the {@link IBlockIconProvider} to use for {@link WallComponent}.
  
  @param insideIcon the inside icon
  @return the icon provider builder