WordPress at a glance
function is not described

Translation_Entry::key() public WP 1.0

Generates a unique key for this entry

{} It's a method of the class: Translation_Entry{}

No Hooks.

Return

String|true|false. the key or false if the entry is empty

Usage

$Translation_Entry = new Translation_Entry();
$Translation_Entry->key();

Code of Translation_Entry::key() WP 5.7

<?php
function key() {
	if ( null === $this->singular || '' === $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;
}