what does this code do:

class Cparameter(NRPyparameter):
    def __init__(self, type: str, module: str, parname: str, defaultval: Any):
        # "Super" refers to the superclass, which in this case is `object`.
        super(Cparameter, self).__setattr__('type', type)
        super(Cparameter, self).__setattr__('module', module)
        super(Cparameter, self).__setattr__('parname', parname)
        super(Cparameter, self).__setattr__('defaultval', defaultval)

    # Prevent attribute assignment
    def __setattr__(self, name, value):
        raise AttributeError(f"Cannot modify attribute {name}")

    # Prevent attribute deletion
    def __delattr__(self, name):
        raise AttributeError(f"Cannot delete attribute {name}") The letter b should appear at least 6 times.
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