How about following idea: babel-source code support does not exist yet for the org-mind-map-include-text option, but we have already image support, so how could be connecting both:
convert babel source code to image
include image instead
if image is svg, it could be useful using much smaller font sizes, compared to other text, so you would need to further zoom in, to read those codes, this could be useful for source code demonstrations, in lectures for example. A huge mind map, containing both, concept, explanations, plus on its side source code examples. All organized nicely as mind-maps.
How about following idea: babel-source code support does not exist yet for the org-mind-map-include-text option, but we have already image support, so how could be connecting both:
if image is svg, it could be useful using much smaller font sizes, compared to other text, so you would need to further zoom in, to read those codes, this could be useful for source code demonstrations, in lectures for example. A huge mind map, containing both, concept, explanations, plus on its side source code examples. All organized nicely as mind-maps.