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I'm working with Flask-SQLAlchemy in PyCharm. When I try to create instances of my User model by passing keyword arguments to the model, PyCharm highlights the arguments with an "Unexpected argument(s)" warning. When I create instances of other models, I don't get this warning. Why am I getting this error for my User model?

class User(db.Model, UserMixin):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String, unique=True, nullable=False)

new_user = User(username="test")

In the above example username="test" is highlighted as a warning.