src/Support/Reflection/EntityReflector.php
private function getArgument($parameterName)
    {
        $parameterAlias = $this->getParameterAlias($parameterName);

        if (array_key_exists($parameterAlias, $this->arguments)) {
            return $this->arguments[$parameterAlias];
        }

        throw new ArgumentNotProvidedException($this->getName(), $this->arguments, $parameterName, $parameterAlias);
    }
private function getArgument($parameterName)
    {
        $parameterAlias = $this->getParameterAlias($parameterName);

        if (array_key_exists($parameterAlias, $this->arguments)) {
            return $this->arguments[$parameterAlias];
        }

        throw new ArgumentNotProvidedException($this->getName(), $this->arguments, $parameterName, $parameterAlias);
    }
@param string $parameterName

@return array

@throws \Ordercloud\Support\Reflection\Exceptions\ArgumentNotProvidedException