There should be a way to remove particular licenses or license expression from license expressions

[JonoYang]

This would be useful in the case where we want to remove an invalid license key from a license expression without converting that license expression to a string, then removing the license key from the string, then re-parsing the resulting license expression string back into a license expression object.

[hesa]

What would it mean to remove MIT from a license expressions such as MIT OR Apache-2.0 AND MIT?

• If the expression is simplified (e.g. Licensing().parse("MIT OR Apache-2.0 AND MIT").simplify()) then we get MIT after simplifying. And when removing MIT we get an empty string.
• If we do remove without the simplify() call we get: Apache-2.0

I am not sure what it means to remove a license in a "complex" license expression, one that could be created by accumulating a lot of components' licenses and "AND:ing" them together.

[mjherzog]

@JonoYang My question is "what does invalid license key mean?" in this context My guess is that you are talking about an incorrectly detected license key rather than an invalid key (?). In that case for Henrik's point you need some way to correct the detection without affecting other instances of that license from a correct detection.