Metadata.toString() returns a super complecated JSON string

[kazurayam]

println metadata.toString() emits

{"step":{"key":"step","value":"01","matchedByAster":true}, "URL.host":{"key":"URL.host","value":"kazurayam.github.io","matchedByAster":true}, "URL.path":{"key":"URL.path","value":"/materialstore/images/tutorial/03_apple.png","matchedByAster":true}, "URL.port":{"key":"URL.port","value":"80","matchedByAster":true}, "URL.protocol":{"key":"URL.protocol","value":"https","matchedByAster":true}}

println metadata.getMetadataIdentification().toString() emits

{"step":"01", "URL.host":"kazurayam.github.io", "URL.path":"/materialstore/images/tutorial/03_apple.png", "URL.port":"80", "URL.protocol":"https"}

This value is returned by MetadataIdentification#toString()

Is this OK?

I would want metadata.toString() to emit the short string {"step":"01", "URL.host":"kazurayam.github.io", "URL.path":"/materialstore/images/tutorial/03_apple.png", "URL.port":"80", "URL.protocol":"https"}.

It is intuitive, better