Plugin source location:
"key" : "value" format. It is also suitable to parse string maps in Go, since their syntax is very similar. Whitespace before and afer colon is ignored. Each key-value pair must be on its own line. If the line ends with a comment, it will be extracted as an additional hint as well. If the string key is identical to the string itself, it will not be extracted (since it adds no value).
Note that this parser supports only a subset of syntax and does no validation. It is targeted for arbitrary source code files. If your resource file is rather a well-formed JSON that can be strictly validated, you can use the parse_json_keyvalue plugin instead.
Limitation: both key and value need to double-quoted. Single-quoted strings are not supported. Multi-line strings are not supported as well.