			$this->where = array_merge( $this->where, $where );
		} else {
			throw new \MWException( __METHOD__ . ': An invalid where clause was passed.' );
			return false;
		}
		return true;
	}
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.