Method getMetaFromState

src/main/java/net/minecraft/block/Block.java:267–277

Convert the BlockState into the correct metadata value

(IBlockState state)

     * Convert the BlockState into the correct metadata value
     */
    public int getMetaFromState(IBlockState state)
    {
        if (state != null && !state.getPropertyNames().isEmpty())
        {
            throw new IllegalArgumentException("Don\'t know how to convert " + state + " back into data...");
        }
        else
        {
            return 0;
        }
    }

    /**
     * Get the actual Block state of this Block at the given position. This applies properties not visible in the