WP_Block_Processor::get_breadcrumbs(): string[]

1171	public function get_breadcrumbs(): array {1172		$breadcrumbs = array_fill( 0, count( $this->open_blocks_at ), null );1173 1174		/*1175		 * Since HTML spans can only be at the very end, set the normalized block name for1176		 * each open element and then work backwards after creating the array. This allows1177		 * for the elimination of a conditional on each iteration of the loop.1178		 */1179		foreach ( $this->open_blocks_at as $i => $at ) {1180			$block_type        = substr( $this->source_text, $at, $this->open_blocks_length[ $i ] );1181			$breadcrumbs[ $i ] = self::normalize_block_type( $block_type );1182		}1183 1184		if ( isset( $i ) && 0 === $this->open_blocks_length[ $i ] ) {1185			$breadcrumbs[ $i ] = '#html';1186		}1187 1188		return $breadcrumbs;1189	}