Source

File: wp-includes/class-wp-customize-control.php

final public function check_capabilities() {
		if ( ! empty( $this->capability ) && ! current_user_can( $this->capability ) ) {
			return false;
		}

		foreach ( $this->settings as $setting ) {
			if ( ! $setting || ! $setting->check_capabilities() ) {
				return false;
			}
		}

		$section = $this->manager->get_section( $this->section );
		if ( isset( $section ) && ! $section->check_capabilities() ) {
			return false;
		}

		return true;
	}