/**
     * Get the value for the key 'http.proxy.port'. <br>
     * The value is, e.g. 8080 <br>
     * comment: Port number for the HTTP proxy server (e.g., 8080).
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getHttpProxyPort();

    /**
     * Get the value for the key 'http.proxy.port' as {@link Integer}. <br>
     * The value is, e.g. 8080 <br>

stretch;\n  width: 100%;\n\n  > .form-control,\n  > .form-select,\n  > .form-floating {\n    position: relative; // For focus state's z-index\n    flex: 1 1 auto;\n    width: 1%;\n    min-width: 0; // https://stackoverflow.com/questions/36247140/why-dont-flex-items-shrink-past-content-size\n  }\n\n  // Bring the \"active\" form control to the top of surrounding elements\n  > .form-control:focus,\n  > .form-select:focus,\n  > .form-floating:focus-within {\n    z-index: 5;\n  }\n\n  // Ensure buttons...

custom focus shadow properly\n      box-shadow: $input-focus-box-shadow;\n    }\n  }\n  @include deprecate(\"The `form-control-focus()` mixin\", \"v4.4.0\", \"v5\", $ignore-warning);\n}\n\n// This mixin uses an `if()` technique to be compatible with Dart Sass\n// See https://github.com/sass/sass/issues/1873#issuecomment-152293725 for more details\n@mixin form-validation-state-selector($state) {\n  @if ($state == \"valid\" or $state == \"invalid\") {\n    .was-validated #{if(&, \"&\", \"\")}:#{$state},\n...