src/Services/BaseRestService.php
public function setConfig(array $configuration)
    {
        $this->config = Functions\arrayMergeDeep(
            $this->config,
            $this->resolver->resolveOptions($configuration)
        );
    }
public function setConfig(array $configuration)
    {
        $this->config = Functions\arrayMergeDeep(
            $this->config,
            $this->resolver->resolveOptions($configuration)
        );
    }
Set multiple configuration options.

@param array $configuration Associative array of configuration options and their values.