private function ensureInput() {
		if(!$this->input) {
			$this->getInputFromHTTP();
			if(!$this->input) throw new WebHookHandlerException('Could not fetch input', WebHookHandlerException::INPUT_FETCH_FAILED);
		}
	}
private function ensureInput() {
		if(!$this->input) {
			$this->getInputFromHTTP();
			if(!$this->input) throw new WebHookHandlerException('Could not fetch input', WebHookHandlerException::INPUT_FETCH_FAILED);
		}
	}
private function ensureInput ( ) { if ( ! $ this -> input ) { $ this -> getInputFromHTTP ( ) ; if ( ! $ this -> input ) throw new WebHookHandlerException ( 'Could not fetch input' , WebHookHandlerException :: INPUT_FETCH_FAILED ) ; } }
Ensure the input payload exists, or throw an exception if not

@throws WebHookHandlerException Exception if input could not be fetched
Ensure the input payload exists or throw an exception if not