How to print customer array full data.

public function __construct( \Magento\Customer\Model\Customer $customermodel, \Magento\Customer\Model\Address $addressmodel, \Magento\Customer\Api\CustomerRepositoryInterface $customer ) { $this->_customer = $customer; $this->_address = $addressmodel; $this->_customermodel = $customermodel; }

$customerData = $this->_customer->getById($customerId);

How to print $customerData ?