this will add all header in given map to the message . concode_field_sep Map<String,String> headerMap concode_elem_sep List<Header> headerList concode_field_sep void add concode_elem_sep boolean contains concode_elem_sep List<Header> getAll concode_elem_sep int size concode_elem_sep List<String> getAllBy concode_elem_sep String get concode_elem_sep void clear concode_elem_sep int distinctSize concode_elem_sep void remove
void function ( final Map < String , String > arg0 ) { arg0 . forEach ( this :: add ) ; }