Simple dictionaries are not allowed in annotation properties

[marcverhagen]

Because

In clamsproject/app-swt-detection#62 we discussed using a simple dictionary with classification results. This is allowed by the schema and we felt it would be a decent thing to do.

However, the add_property() method of the Mmif Annotation object does not allow this:

mmif-python/mmif/serialize/annotation.py

Lines 119 to 124 in 887c303

	if self.check_prop_value_is_simple_enough(value):
	self.properties[name] = value
	else:
	raise ValueError("Property values cannot be a complex object. It must be "
	"either string, number, boolean, None, or a list of them."
	f"(\"{name}\": \"{str(value)}\"")

We should decide whether this was a good idea, my vote would be to update check_prop_value_is_simple_enough and allow dictionary with atomic values.

Done when

No response

Additional context

No response

[keighrim]

reopening this as test fails in #255 .