psiphp / object-agent

            'maxResults' => null,

        ];

        if ($diff = array_diff(array_keys($query), array_keys($defaults))) {

            throw new \InvalidArgumentException(sprintf(

                'Invalid query keys "%s", valid keys: "%s"',

                implode('", "', $diff), implode('", "', array_keys($defaults))

            ));

        }

        $query = array_merge($defaults, $query);

            'can_join' => false,

        ];

        if ($diff = array_diff(array_keys($capabilities), array_keys($defaults))) {

            throw new \InvalidArgumentException(sprintf(

                'Unknown capabilities: "%s". Valid capabilities: "%s"',

                implode('", "', $diff), implode('", "', array_keys($defaults))

            ));

        }

        $capabilities = array_merge($defaults, $capabilities);

    private function merge(array $defaults, array $values, array $required = [])

    {

        if ($diff = array_diff($required, array_keys($values))) {

            throw new \InvalidArgumentException(sprintf(

                'Keys "%s" are required for "%s"',

                implode('", "', $diff), json_encode($values)

            ));

        }

        if ($diff = array_diff(array_keys($values), array_keys($defaults))) {

            throw new \InvalidArgumentException(sprintf(

            ));

        }

        if ($diff = array_diff(array_keys($values), array_keys($defaults))) {

            throw new \InvalidArgumentException(sprintf(

                'Invalid query keys "%s", valid keys: "%s"',

                implode('", "', $diff), implode('", "', array_keys($defaults))

            ));

        }

        return array_merge($defaults, $values);

    }