digraph G {
                resolution=100
                rankdir=UD
                bgcolor=Transparent
              
                node [style="filled",fontname="Hack" ,shape=record] //All nodes will this shape and colour
                edge [color=Gray, fontname="Hack"] //All the lines look like this
              
                ImageBase [
                label = "{ImageBase|+ __init__(filename, mode) \l + read() \l + write(image) \l + flush()\l + close()\l}"
                ]

                MultiTemporalImageBase [
                label = "{MultiTemporalImageBase| + __init__(path, ioclass)  \l + read(timestamp) \l + write(timestamp, data) \l}"
                ]

                {ImageBase}->MultiTemporalImageBase [label="ioclass \l"]

}
