question: read properties from the the previous/version file in the given storage directory . concode_field_sep int namespaceID concode_elem_sep NodeType storageType concode_elem_sep long cTime concode_elem_sep String clusterID concode_elem_sep int layoutVersion concode_elem_sep String STORAGE_FILE_VERSION concode_field_sep Map<Integer,SortedSet<LayoutFeature>> getServiceLayoutFeatureMap concode_elem_sep long getCTime concode_elem_sep void checkStorageType concode_elem_sep int getServiceLayoutVersion concode_elem_sep String getProperty concode_elem_sep void setStorageInfo concode_elem_sep void setServiceLayoutVersion concode_elem_sep boolean versionSupportsFederation concode_elem_sep void setcTime concode_elem_sep void setNamespaceID concode_elem_sep void setClusterId concode_elem_sep int getNsIdFromColonSeparatedString concode_elem_sep Properties readPropertiesFile concode_elem_sep void readProperties concode_elem_sep String getClusterID concode_elem_sep String toColonSeparatedString concode_elem_sep void setLayoutVersion concode_elem_sep String getClusterIdFromColonSeparatedString concode_elem_sep int getNamespaceID concode_elem_sep String toString concode_elem_sep int getLayoutVersion concode_elem_sep void setFieldsFromProperties
target: void function ( StorageDirectory arg0 ) { Properties loc0 = readPropertiesFile ( arg0 . getPreviousVersionFile ( ) ) ; setFieldsFromProperties ( loc0 , arg0 ) ; }