specify if the given payload is empty . concode_field_sep MessageConverter converter concode_elem_sep Validator validator concode_field_sep String getParameterName concode_elem_sep Object resolveArgument concode_elem_sep boolean supportsParameter concode_elem_sep void validate
boolean function ( Object arg0 ) { if ( arg0 == null ) { return true ; } else if ( arg0 instanceof byte [ ] ) { return ( ( byte [ ] ) arg0 ) . length == 0 ; } else if ( arg0 instanceof String ) { return ! StringUtils . hasText ( ( String ) arg0 ) ; } else { return false ; } }