Currently, the api for instantiating MapType <https://arrow.apache.org/docs/python/generated/pyarrow.map_.html> only accepts DataType for the key_type and item_type arguments. Is it possible to create a MapType passing Field types instead? Looking for something similar to what is possible for ListType <https://arrow.apache.org/docs/python/generated/pyarrow.list_.html#pyarrow.list_> in python or what seems to be possible from the cpp implementation of MapType <https://github.com/apache/arrow/blob/master/cpp/src/arrow/type.cc#L424> (untested).
Thanks for any insights, Jason
