Description
additional syntaxes
- f=/path/to/node/* : map all fields in that path to respective keys
- f=/path/to/node/** : map all fields recursively in that path with respective keys
- f=dest:/path/to/node/*: map all the fields to a field called 'dest'
- f=dest:/path/to/node/**:map all the fields recursively to a field called 'dest'