I have a parameter like following:

stringParam {
  trim(true)
  name('Version to install')
  defaultValue('')
  description('The version to install.')
}

Which I can use in Jenkinsfiles like:

echo params.'Version to install'

However, they apparently cannot be expanded by token macro (when referenced in other parameters as well).

It would be really nice if that could work. Maybe something like:

${Version\ to\ install}