public function maybe_enroll_users_in_product() {

		// Verify bulk enrollment request.
		$do_bulk_enroll = $this->_bottom_else_top( 'llms_bulk_enroll' );

		// Bail if this is not a bulk enrollment request.
		if ( empty( $do_bulk_enroll ) ) {
			return;
		}

		// Get the product (course/membership) to enroll users in.
		$this->product_id = $this->_bottom_else_top( 'llms_bulk_enroll_product', FILTER_VALIDATE_INT );

		if ( empty( $this->product_id ) ) {
			$message = __( 'Please select a Course or Membership to enroll users into!', 'lifterlms' );
			$this->generate_notice( 'error', $message );
			return;
		}

		// Get the product title for notices.
		$this->product_title = get_the_title( $this->product_id );

		// Get all the user ids to enroll.
		$this->user_ids = filter_input( INPUT_GET, 'users', FILTER_DEFAULT, FILTER_REQUIRE_ARRAY );

		if ( empty( $this->user_ids ) ) {
			$message = sprintf( __( 'Please select users to enroll into <em>%s</em>.', 'lifterlms' ), $this->product_title );
			$this->generate_notice( 'error', $message );
			return;
		}

		$this->enroll_users_in_product();

	}