apply_filters( 'populate_network_meta', array $sitemeta, int $network_id )

1354	 *1355	 * @since 3.7.01356	 *1357	 * @param array $sitemeta   Associative array of network meta keys and values to be inserted.1358	 * @param int   $network_id ID of network to populate.1359	 */1360	$sitemeta = apply_filters( 'populate_network_meta', $sitemeta, $network_id );1361 1362	$insert = '';1363	foreach ( $sitemeta as $meta_key => $meta_value ) {1364		if ( is_array( $meta_value ) ) {1365			$meta_value = serialize( $meta_value );1366		}