protected function backupXliffFile($packageKey, $language) {
		if (is_file($this->getFilePath($packageKey, $language))) {
			copy(
				$this->getFilePath($packageKey, $language),
				$this->getFilePath($packageKey, $language) . '_backup_' . time()
			);
		}
	}
protected function backupXliffFile($packageKey, $language) {
		if (is_file($this->getFilePath($packageKey, $language))) {
			copy(
				$this->getFilePath($packageKey, $language),
				$this->getFilePath($packageKey, $language) . '_backup_' . time()
			);
		}
	}
protected function backupXliffFile ( $ packageKey , $ language ) { if ( is_file ( $ this -> getFilePath ( $ packageKey , $ language ) ) ) { copy ( $ this -> getFilePath ( $ packageKey , $ language ) , $ this -> getFilePath ( $ packageKey , $ language ) . '_backup_' . time ( ) ) ; } }
Creates a backup file of the existing Xliff file before it gets overwritten
by the new data later on.

@param string $packageKey
@param string $language
Creates a backup file of the existing Xliff file before it gets overwritten by the new data later on .