    # File lib/compass/sass_extensions/functions/gradient_support.rb, line 92
        def initialize(position, shape_and_size, color_stops)
          unless color_stops.value.size >= 2
            raise Sass::SyntaxError, "At least two color stops are required for a radial-gradient"
          end
          if angle?(position)
            raise Sass::SyntaxError, "CSS no longer allows angles in radial-gradients."
          end
          self.position = position
          self.shape_and_size = shape_and_size
          self.color_stops = color_stops
        end