def has_keyframe?
      result = false
      self.frames.each do |f|
        if f.is_keyframe?
          result = true
          break
        end
      end
      result
    end
def has_keyframe?
      result = false
      self.frames.each do |f|
        if f.is_keyframe?
          result = true
          break
        end
      end
      result
    end
Check if it has keyframes.