fix: Composer configuration, typos and type hints

[kampalex]

Just came to submit a typo, but I found a few small issues while reviewing this library using phpStorm:

• Usage of Throwable when using PHP 5.6 (which is minimal PHP version requirement for this library, I reported it in separate issue)
• Added Composer extension requirements (json, curl)
• Client: magic method 'unsubcribes' -> 'unsubscribes'
• Exception throw blocks
• Typos

ps. In addition of this, I've found missing 4th argument of magic get() method in example.php:
$response = $client->api_keys()->get(null, $queryParams, $requestHeaders, $retryOnLimit);
Not a big thing. Just mentioning.

Checklist

• I acknowledge that all my contributions will be made under the project's license
• I have made a material change to the repo (functionality, testing, spelling, grammar)
• I have read the Contribution Guidelines and my PR follows them
• I have titled the PR appropriately
• I have updated my branch with the master branch
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation about the functionality in the appropriate .md file
• I have added inline documentation to the code I modified

[thinkingserious]

The typo fixes LGTM, thanks!

[thinkingserious]

With respect to

ps. In addition of this, I've found missing 4th argument of magic get() method in example.php:
$response = $client->api_keys()->get(null, $queryParams, $requestHeaders, $retryOnLimit);

Do you mean that there is an error when you try to pass in $retryOnLimit?

Thanks!

[kampalex]

With respect to

ps. In addition of this, I've found missing 4th argument of magic get() method in example.php:
$response = $client->api_keys()->get(null, $queryParams, $requestHeaders, $retryOnLimit);

Do you mean that there is an error when you try to pass in $retryOnLimit?

Thanks!

Hi Elmer. This is not a functional error, just an incomplete PHPDoc magic method definition just having 3 arguments which are available for usage. If providing 4th argument (like in the example.php), phpStorm will report the use of an unsupported 4th argument.

Function __call handles execution of magic methods get, post, patch, put and delete (these are inside property methods). Arguments 0..3 are extracted which means that 4 arguments can be provided. Last argument is $retryOnLimit which can be overridden if given.

Easy fix for this: append , $retryOnLimit = null before close parenthesis of each method:

 * @method Response get($body = null, $query = null, $headers = null, $retryOnLimit = null)
 * @method Response post($body = null, $query = null, $headers = null, $retryOnLimit = null)
 * @method Response patch($body = null, $query = null, $headers = null, $retryOnLimit = null)
 * @method Response put($body = null, $query = null, $headers = null, $retryOnLimit = null)
 * @method Response delete($body = null, $query = null, $headers = null, $retryOnLimit = null)