imu_filter_madgwick frames

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Hi, I have an IMU reporting data on imu_link frame. It is mounted on my robot with some offset of it's rotation center. I consider my robot as a base_link frame. Then I have imu_filter_madgick receiving imu msg and publishing filtered imu data (adding orientation). Do I need to set fixed_frame="odom" and add a static_transform_publisher between imu_link and base_link? I will add Robot_localization later in order to fuse filtered imu with wheel encoder odometry.