wp-includes/customize/class-wp-widget-form-customize-control.php:128Override render_content to be no-op since content is exported via to_json for deferred embedding.
public function render_content() {}Introduced in 3.9.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/customize/class-wp-widget-form-customize-control.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.