Merge "Optimize SystemConfig feature parsing" into main

    }

    private void readAllPermissions() {

        readAllPermissionsFromXml();

        readAllPermissionsFromEnvironment();

        // Apply global feature removal last, after all features have been read.

        // This only needs to happen once.

        for (String featureName : mUnavailableFeatures) {

            removeFeature(featureName);

        }

    }

    private void readAllPermissionsFromXml() {

        final XmlPullParser parser = Xml.newPullParser();

        // Read configuration from system

        } finally {

            IoUtils.closeQuietly(permReader);

        }

    }

    // Add features or permission dependent on global system properties (as

    // opposed to XML permission files).

    // This only needs to be called once after all features have been parsed

    // from various partition/apex sources.

    private void readAllPermissionsFromEnvironment() {

        // Some devices can be field-converted to FBE, so offer to splice in

        // those features if not already defined by the static config

        if (StorageManager.isFileEncrypted()) {

                addFeature(PackageManager.FEATURE_EROFS_LEGACY, 0);

            }

        }

        for (String featureName : mUnavailableFeatures) {

            removeFeature(featureName);

        }

    }

    private @Nullable SignedPackage parseEnhancedConfirmationTrustedPackage(XmlPullParser parser,