question: return the notice header concode_field_sep String characters concode_elem_sep Message header concode_elem_sep Outcome outcome concode_elem_sep Message message concode_elem_sep boolean continuep concode_elem_sep Map<String,Object> parameters concode_elem_sep List<String> errors concode_field_sep void addError concode_elem_sep String getErrorString concode_elem_sep String getOutcome concode_elem_sep String getMessage concode_elem_sep void setContinue concode_elem_sep void setMessage concode_elem_sep void setCharacters concode_elem_sep void setErrors concode_elem_sep List<String> getErrors concode_elem_sep void setHeader concode_elem_sep boolean getContinue concode_elem_sep void setParameter concode_elem_sep void setOutcome concode_elem_sep String getCharacters concode_elem_sep Object getParameter
target: String function ( ) { if ( this . header != null ) { return this . header . getKey ( ) ; } return null ; }