If a legend should be displayed as "ASCII Art" a IllegalStateException is created.
@startuml
legend
|<#335DA5><color:#335DA5> <U+25AF></color> <color:#FFFFFF> backend container<size:9> (eight sided, shadow)</size> </color> |
endlegend
@enduml
http://www.plantuml.com/plantuml/txt/SoWkIImgAStDuSf9JK_DI-6giL4sDZPrSJIriqdEpyalie9n5Mn2jOrC7TtiRFJ14a01g08tCB1JI4fCpWOQeP2SdrUIc9cNMcHJd5cLQcLffw2HcfcUKQ9Gd9cIcgAZK9oHc99VhccZ3vAsKu2RLyC5r0rrXWEG0BeA0000
BR Helmut
PS.: I only found it (it has no relevance for me)