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Custom Parameter Visibility Rule Conditions

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Hi,

we are currently trying to extend the knime.extension.Condition with a IsNotEmpty class, which should check if a value of a Parameter in a ParameterGroup is not empty.

However, we are not quite sure how the to_dict method works. The predefined OneOf condition returns a dict with a oneOf key and a list of {"const": value} pairs. But how is that used?

Thank you!

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