Method with_nullable

datafusion/expr/src/expr_schema.rs:1162–1165

(mut self, nullable: bool)

        }

        fn with_nullable(mut self, nullable: bool) -> Self {
            Arc::make_mut(&mut self.field).set_nullable(nullable);
            self
        }

        fn with_data_type(mut self, data_type: DataType) -> Self {
            Arc::make_mut(&mut self.field).set_data_type(data_type);