def create(self, language, value, synonym_of=values.unset):
data = values.of({'<STR_LIT>': language, '<STR_LIT>': value, '<STR_LIT>': synonym_of, })<EOL>payload = self._version.create(<EOL>'<STR_LIT:POST>',<EOL>self._uri,<EOL>data=data,<EOL>)<EOL>return FieldValueInstance(<EOL>self._version,<EOL>payload,<EOL>assistant_sid=self._solution['<STR_LIT>'],<EOL>field_type_sid=self._solution['<STR_LIT>'],<EOL>)<EOL>
Create a new FieldValueInstance

:param unicode language: An ISO language-country string of the value.
:param unicode value: A user-provided string that uniquely identifies this resource as an alternative to the sid. Unique up to 64 characters long.
:param unicode synonym_of: A value that indicates this field value is a synonym of. Empty if the value is not a synonym.

:returns: Newly created FieldValueInstance
:rtype: twilio.rest.preview.understand.assistant.field_type.field_value.FieldValueInstance