private function _checkUnusedFunctionParameters() {
		if ($this->_isActive('checkUnusedFunctionParameters')) {

			// If the docblock is inherited, this means that the function implements a parent function
			// We may have some unused parameters in this case, we don't generate a warnings
			if (!$this->statementStack->getParentStackItem()->docblocInheritDoc) {

				foreach ($this->_functionParameters as $variableName => $value) {
					if ($value !== "used") {
						$msg = $this->_getMessage('UNUSED_FUNCTION_PARAMETER', $this->_currentFunctionName, $variableName);
						$this->_writeError('checkUnusedFunctionParameters', $msg);
					}
				}
			}
		}
	}