Astra_SureCart::customize_register() Method: Register Customizer sections and panel for SureCart. inc/compatibility/surecart/class-astra-surecart.php:70
Astra_Customizer_Register_Surecart_Section::register_configuration() Method: Register Panels and Sections for Customizer. inc/compatibility/surecart/customizer/class-astra-customizer-register-surecart-section.php:32