module HexaPDF::Content::RenderingIntent

def self.normalize(intent)

* Otherwise an error is raised.
* If the argument is a valid symbol, it is just returned.

Returns the argument normalized to a valid rendering intent. 
def self.normalize(intent)
  case intent
  when ABSOLUTE_COLORIMETRIC, RELATIVE_COLORIMETRIC, SATURATION, PERCEPTUAL
    intent
  else
    raise ArgumentError, "Invalid rendering intent: #{intent}"
  end
end