/**
     * Get the value for the key 'plugin.version.filter'. <br>
     * The value is, e.g.  <br>
     * comment: Version filter for plugins.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getPluginVersionFilter();

    /**
     * Get the value for the key 'plugin.version.filter' as {@link Integer}. <br>
     * The value is, e.g.  <br>

--#{$prefix}list-group-active-border-color: var(--#{$prefix}#{$state}-text-emphasis);\n  }\n}\n// scss-docs-end list-group-modifiers\n","// Transparent background and border properties included for button version.\n// iOS requires the button element instead of an anchor tag.\n// If you want the anchor version, it requires `href=\"#\"`.\n// See https://developer.mozilla.org/en-US/docs/Web/Events/click#Safari_Mobile\n\n.btn-close {\n  // scss-docs-start close-css-vars\n  --#{$prefix}btn-close-color: #{$btn-close-color};\n...

color: $close-color;\n    text-decoration: none;\n  }\n\n  &:not(:disabled):not(.disabled) {\n    @include hover-focus() {\n      opacity: .75;\n    }\n  }\n}\n\n// Additional properties for button version\n// iOS requires the button element instead of an anchor tag.\n// If you want the anchor version, it requires `href=\"#\"`.\n// See https://developer.mozilla.org/en-US/docs/Web/Events/click#Safari_Mobile\n\n// stylelint-disable-next-line selector-no-qualifying-type\nbutton.close {\n  padding: 0;\n...