Core::bp_get_course_members( $course_id )

	public function bp_get_course_members( $course_id ) {
		$post = get_post( $course_id );

		if ( empty( $post ) ) {
			return array();
		}

		$access_list = learndash_get_course_meta_setting( $post->ID, 'course_access_list' );

		if ( ! is_array( $access_list ) ) {
			$access_list = array();
		}

		$result = array();
		if ( ! empty( $access_list ) ) {
			$result = array();
			foreach ( $access_list as $user_id ) {
				$user = get_userdata( (int) $user_id );
				if ( empty( $user ) || ! $user->exists() ) {
					continue;
				}
				if ( is_multisite() && ! is_user_member_of_blog( $user->ID ) ) {
					continue;
				}
				$result[] = $user;
			}
		}

		return $result;
	}