question: add a principal mapping concode_field_sep String file concode_elem_sep boolean trace concode_elem_sep String[] defaultGroups concode_elem_sep String domain concode_elem_sep Map<String,String> groups concode_elem_sep Map<String,String> principals concode_elem_sep long serialVersionUID concode_elem_sep CoreLogger log concode_elem_sep boolean mappingRequired concode_elem_sep String DEFAULT_CALLBACK_PROPERTIES concode_elem_sep Principal defaultPrincipal concode_field_sep void setMappingRequired concode_elem_sep void setDomain concode_elem_sep void writeObject concode_elem_sep void setDefaultPrincipal concode_elem_sep Principal getDefaultPrincipal concode_elem_sep void addGroupMapping concode_elem_sep void start concode_elem_sep String[] getDefaultGroups concode_elem_sep Principal mapPrincipal concode_elem_sep void readObject concode_elem_sep String getDomain concode_elem_sep void setFile concode_elem_sep void stop concode_elem_sep boolean isMappingRequired concode_elem_sep void setDefaultGroups concode_elem_sep String mapGroup concode_elem_sep String toString
target: void function ( String arg0 , String arg1 ) { principals . put ( arg0 , arg1 ) ; }