question: links the two field names into a single left.right field name . if the left field is empty , right is returned concode_field_sep Pattern DOT_SEPARATOR_PATTERN concode_field_sep void setValue concode_elem_sep T getValueOrNull concode_elem_sep Object getValueOrNull concode_elem_sep void resetValue concode_elem_sep boolean hasField
target: String function ( String arg0 , String arg1 ) { return arg0 == null || arg0 . isEmpty ( ) ? arg1 : arg0 + "srini_string" + arg1 ; }