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Bulk_Upgrader_Skin::flush_output()

Source

File: wp-admin/includes/class-bulk-upgrader-skin.php

public function flush_output() {
		wp_ob_end_flush_all();
		flush();
	}

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/bulk_upgrader_skin/flush_output