Classes geometron

$digraph "classes_uml_geometron" { rankdir=BT charset="utf-8" "geometron.core.FakeClass" [color="black", fontcolor="black", label=<{FakeClass|name : NoneType, str |display(text) }>, shape="record", style="solid"]; "geometron.survey.survey.TopoLine" [color="black", fontcolor="black", label=<{TopoLine| |plot(ax) }>, shape="record", style="solid"]; "geometron.survey.survey.TopoObject" [color="black", fontcolor="black", label=<{TopoObject|geometry kind name show_label |to_geo() }>, shape="record", style="solid"]; "geometron.survey.survey.TopoPoint" [color="black", fontcolor="black", label=<{TopoPoint|symbol : str |plot(ax) }>, shape="record", style="solid"]; "geometron.survey.survey.TopoLine" -> "geometron.survey.survey.TopoObject" [arrowhead="empty", arrowtail="none"]; "geometron.survey.survey.TopoPoint" -> "geometron.survey.survey.TopoObject" [arrowhead="empty", arrowtail="none"]; }$