@startuml sdfThing --> "0+" sdfObject : hasObject sdfThing --> "0+" sdfThing : hasThing sdfThing --> "0+" sdfProperty : hasProperty sdfThing --> "0+" sdfAction : hasAction sdfThing --> "0+" sdfEvent : hasEvent sdfObject --> "0+" sdfProperty : hasProperty sdfObject --> "0+" sdfAction : hasAction sdfObject --> "0+" sdfEvent : hasEvent sdfAction --> "0+" sdfData : hasInputData sdfAction --> "0+" sdfData : hasOutputData sdfEvent --> "0+" sdfData : hasOutputData sdfProperty --> "1" sdfData : isInstanceOf class sdfThing { } class sdfObject { } class sdfProperty { } class sdfAction { } class sdfEvent { } class sdfData { } @enduml Submit amiga aws-orange black-knight bluegray blueprint cerulean-outline cerulean crt-amber crt-green cyborg-outline cyborg hacker lightgray mars materia-outline materia metal mimeograph minty plain reddress-darkblue reddress-darkgreen reddress-darkorange reddress-darkred reddress-lightblue reddress-lightgreen reddress-lightorange reddress-lightred sandstone silver sketchy-outline sketchy spacelab spacelab-white superhero-outline superhero toy united vibrant       🎉 Discover the future PlantUML Web Editor! 🚀  PNG  SVG  ASCII Art