As far as i can see for now there are only a few of diagrams support stereotypes for lines. Namely:
1) sequence diagrams:
https://forum.plantuml.net/15614/style-sequence-allow-stereotype-for-arrow-sequence-diagram
2) component diagrams:
https://forum.plantuml.net/3816/please-provide-stereotyped-kinparams-component-diagrams
Class diagrams (that i'm interested for now) seem to not be supported at all.
Please, add arrow stereotypes/or styles for all diagrams in one unified way. It is also a good idea to not extend
list dramatically:
@startuml
skinparameters
@enduml
Unified syntax:
skinparam arrow { ...
is proposed
