By default, new API metadata files are created in version 2.0 format. This format has some differences compared to the earlier 1.0 version syntax.
To convert a version 1.0 metadata file into version 2.0: click the Convert to v.2.0 button.
There are only a few differences between the data formats. In version 2.0:
The naming pattern of the file itself is still the same. For example, if the API directory is phone_parser_api, the metadata filename is phone_parser_api.metaxml.