Mutation testing on XML?

Hi Folks,

	Mutation analysis and testing can be applied
 	to design models, specifications, databases,
 	tests, XML, and other types of software
 	artifacts, although program mutation is the
 	most common. [1]

Have you done mutation testing on XML? If yes, would you describe how you did it, please?

/Roger

[1] https://en.wikipedia.org/wiki/Mutation_testing#Introduction