question: obtain a json string representation of the specified field . concode_field_sep StringBuilder sb concode_elem_sep boolean detailed concode_field_sep RecordWriter detailed concode_elem_sep String asDetailedString concode_elem_sep String asDetailedString concode_elem_sep String asDetailedString concode_elem_sep String asDetailedString concode_elem_sep void appendFirst concode_elem_sep String toString concode_elem_sep void appendAdditional concode_elem_sep RecordWriter append
target: String function ( Field arg0 ) { return new RecordWriter ( ) . append ( arg0 ) . toString ( ) ; }