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I getting Error in plugin development

I just started integration of my own plugins but I am getting errors. Anyone has any solution please share.

Error: Class MauticPlugin\HelloWorldBundle\Integration\Support\ConfigSupport contains 2 abstract methods and must t
herefore be declared abstract or implement the remaining methods (Mautic\IntegrationsBundle\Integration\Interfaces
ConfigFormInterface::getConfigFormName, Mautic\IntegrationsBundle\Integration\Interfaces\ConfigFormInterface::getCo
nfigFormContentTemplate)