def method_missing name, *args, **options
      Vips::Operation.call name.to_s, [self, *args], options
    end
def method_missing name, *args, **options
      Vips::Operation.call name.to_s, [self, *args], options
    end
Invoke a vips operation with {Vips::Operation.call}, using self as
 the first input argument.

 @param name [String] vips operation to call
 @return result of vips operation