src/Endpoint/Abstracts/AbstractEndpoint.php
protected function verifyData()
    {
        if (isset($this->_DATA_TYPE) || !empty($this->_DATA_TYPE)) {
            $this->verifyDataType();
        }
        if (!empty($this->_REQUIRED_DATA)) {
            $this->verifyRequiredData();
        }
        return true;
    }
protected function verifyData()
    {
        if (isset($this->_DATA_TYPE) || !empty($this->_DATA_TYPE)) {
            $this->verifyDataType();
        }
        if (!empty($this->_REQUIRED_DATA)) {
            $this->verifyRequiredData();
        }
        return true;
    }
Validate the Data property on the Endpoint
@return bool
@throws RequiredDataException