PhpDocParam
  = AnnotationName Type IsVariadic? ParameterName Description?

AnnotationName
  = '@param'

IsVariaric
  = '...'

ParameterName
  = '$' [a-zA-Z_\127-\255][a-zA-Z0-9_\127-\255]*

Description
  = .+ # TODO: exclude EOL or another PhpDocTag start
