getBootstrapTemplate example

$variableOverridesFile = $directory . '/src/Resources/app/storefront/src/scss/overrides.scss';

        $composer = str_replace(
            ['#namespace#', '#class#'],
            [$pluginName, $pluginName],
            $this->getComposerTemplate()
        );

        $bootstrap = str_replace(
            ['#namespace#', '#class#'],
            [$pluginName, $pluginName],
            $this->getBootstrapTemplate()
        );

        $themeConfig = str_replace(
            ['#name#', '#snake-case#'],
            [$themeName, $snakeCaseName],
            $this->getThemeConfigTemplate()
        );

        file_put_contents($composerFile, $composer);
        file_put_contents($bootstrapFile, $bootstrap);
        file_put_contents($themeConfigFile, $themeConfig);