Method mustNotBeNone

source/python.js:13166–13171

()

                return this.type() instanceof torch.NoneType || this._node.mustBeNone();
            }
            mustNotBeNone() {
                return this._node.kind() !== 'prim::AutogradAdd' &&
                    this.type() !== torch.NoneType.get() &&
                    !(this.type() instanceof torch.OptionalType) &&
                    !(this.type() instanceof torch.UnionType && this.type().expect(torch.UnionType).canHoldType(torch.NoneType.get()));
            }
            isValidName(name) {
                if (name.length === 0) {
                    return true;