question: return an enumeration of the names of the initialization parameters for this filter . concode_field_sep InstanceManager instanceManager concode_elem_sep ObjectName oname concode_elem_sep Context context concode_elem_sep StringManager sm concode_elem_sep long serialVersionUID concode_elem_sep FilterDef filterDef concode_elem_sep List<String> emptyString concode_elem_sep org.apache.juli.logging.Log log concode_elem_sep Filter filter concode_field_sep Map<String,String> getFilterInitParameterMap concode_elem_sep ServletContext getServletContext concode_elem_sep void release concode_elem_sep void registerJMX concode_elem_sep void initFilter concode_elem_sep InstanceManager getInstanceManager concode_elem_sep Filter getFilter concode_elem_sep String getFilterName concode_elem_sep FilterDef getFilterDef concode_elem_sep String getInitParameter concode_elem_sep String getFilterClass concode_elem_sep void unregisterJMX concode_elem_sep String toString
target: Enumeration < String > function ( ) { Map < String , String > loc0 = filterDef . getParameterMap ( ) ; if ( loc0 == null ) { return Collections . enumeration ( emptyString ) ; } return Collections . enumeration ( loc0 . keySet ( ) ) ; }