Popsu-coloque/web/core/modules/system/tests/themes/test_theme_twig_registry_loader_theme/templates/twig-registry-loader-test-extend.html.twig

This line is from test_theme_twig_registry_loader_theme/templates/twig-registry-loader-test-extend.html.twig

{% block content %}
This text is in a block.
{% endblock %}