system/Database/BaseConnection.php
public function getIndexData(string $table)
	{
		$fields = $this->_indexData($this->protectIdentifiers($table, true, false, false));

		return $fields ?? false;
	}
public function getIndexData(string $table)
	{
		$fields = $this->_indexData($this->protectIdentifiers($table, true, false, false));

		return $fields ?? false;
	}
Returns an object with key data

@param  string $table the table name
@return array|false