Classes/Utility/ExtensionUtility.php
public static function extensionSignature(string $namespace, string $extensionKey, string $separator = '.'): string {
    $namespace    = GeneralUtility::underscoredToUpperCamelCase($namespace);
    $extensionKey = GeneralUtility::underscoredToUpperCamelCase($extensionKey);

    return "${namespace}${separator}${extensionKey}";
  }
public static function extensionSignature(string $namespace, string $extensionKey, string $separator = '.'): string {
    $namespace    = GeneralUtility::underscoredToUpperCamelCase($namespace);
    $extensionKey = GeneralUtility::underscoredToUpperCamelCase($extensionKey);

    return "${namespace}${separator}${extensionKey}";
  }
public static function extensionSignature ( string $ namespace , string $ extensionKey , string $ separator = '.' ) : string { $ namespace = GeneralUtility :: underscoredToUpperCamelCase ( $ namespace ) ; $ extensionKey = GeneralUtility :: underscoredToUpperCamelCase ( $ extensionKey ) ; return "${namespace}${separator}${extensionKey}" ; }
Gets an extension signature from a namespace and extension key.

@param string $namespace The namespace
@param string $extensionKey The extension key
@param string $separator The optional separator, defaults to `.`
@return string The extension signature
Gets an extension signature from a namespace and extension key .