in wicket 7 addKeyMessage(String key)
method is deprecated from IValidationError interface. What I can use instead of this?
Have you tried checking javadoc? https://ci.apache.org/projects/wicket/apidocs/6.x/org/apache/wicket/validation/ValidationError.html#addMessageKey(java.lang.String)
Deprecated. use addKey(String)
It looks like it was just renamed.