WordPress/Sniffs/Utils/I18nTextDomainFixerSniff.php
public function register() {
		$headers                  = array_map(
			'preg_quote',
			array_keys( $this->theme_headers ),
			array_fill( 0, \count( $this->theme_headers ), '`' )
		);
		$this->theme_header_regex = sprintf( $this->header_regex_template, implode( '|', $headers ) );

		$headers                   = array_map(
			'preg_quote',
			array_keys( $this->plugin_headers ),
			array_fill( 0, \count( $this->plugin_headers ), '`' )
		);
		$this->plugin_header_regex = sprintf( $this->header_regex_template, implode( '|', $headers ) );

		$targets = parent::register();

		$targets[] = \T_DOC_COMMENT_OPEN_TAG;
		$targets[] = \T_COMMENT;

		return $targets;
	}
public function register() {
		$headers                  = array_map(
			'preg_quote',
			array_keys( $this->theme_headers ),
			array_fill( 0, \count( $this->theme_headers ), '`' )
		);
		$this->theme_header_regex = sprintf( $this->header_regex_template, implode( '|', $headers ) );

		$headers                   = array_map(
			'preg_quote',
			array_keys( $this->plugin_headers ),
			array_fill( 0, \count( $this->plugin_headers ), '`' )
		);
		$this->plugin_header_regex = sprintf( $this->header_regex_template, implode( '|', $headers ) );

		$targets = parent::register();

		$targets[] = \T_DOC_COMMENT_OPEN_TAG;
		$targets[] = \T_COMMENT;

		return $targets;
	}
Returns an array of tokens this test wants to listen for.

@since 1.2.0

@return array