question: returns an unmodifiable mapping from original names to new names . concode_field_sep char SEPARATOR concode_elem_sep Splitter LINE_SPLITTER concode_elem_sep Comparator<Map.Entry<String,String>> ENTRY_COMPARATOR concode_elem_sep ImmutableBiMap<String,String> map concode_field_sep VariableMap fromMap concode_elem_sep int compare concode_elem_sep int findIndexOfChar concode_elem_sep byte[] toBytes concode_elem_sep void save concode_elem_sep String lookupSourceName concode_elem_sep String unescape concode_elem_sep VariableMap load concode_elem_sep String lookupNewName concode_elem_sep Map<String,String> toMap concode_elem_sep VariableMap fromBytes concode_elem_sep Map<String,String> getNewNameToOriginalNameMap concode_elem_sep String escape
target: Map < String , String > function ( ) { return ImmutableSortedMap . copyOf ( map ) ; }