question: return the prefix to be applied to any code built by this resolver . returns an empty string in case of no prefix . concode_field_sep MessageCodeFormatter DEFAULT_FORMATTER concode_elem_sep String prefix concode_elem_sep MessageCodeFormatter formatter concode_elem_sep String CODE_SEPARATOR concode_field_sep void buildFieldList concode_elem_sep String[] resolveMessageCodes concode_elem_sep String[] resolveMessageCodes concode_elem_sep String postProcessMessageCode concode_elem_sep void setPrefix concode_elem_sep String format concode_elem_sep String format concode_elem_sep String toDelimitedString concode_elem_sep void setMessageCodeFormatter concode_elem_sep void addCodes concode_elem_sep void addCode
target: String function ( ) { return this . prefix ; }