IllegalArgumentException on when the setter parameter is of type Object

[nfalco79]

The full description of the issue is here

In short: RequestImpl instantiate a ChoiceParameterDefinition class and than using reflection lookup a setter @DataBoundSetter annotated for "choice" property. It takes the parameter type from method (in this unlikely case Object) and than use apache beanutils to convert the actual value "v1\n2\n3" (String) to Object. Since there are no converter registered for Object it fails

[jglick]

JENKINS-61438