Translation_Entry::key(): string|false

Source

public function key() {
	if ( null === $this->singular ) {
		return false;
	}

	// Prepend context and EOT, like in MO files.
	$key = ! $this->context ? $this->singular : $this->context . "\4" . $this->singular;
	// Standardize on \n line endings.
	$key = str_replace( array( "\r\n", "\r" ), "\n", $key );

	return $key;
}

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