description should be a list of nodes each node representing a subfeature.Inside each node, enter the desired feature and subfeature and its params. params are the parameters you should normally send to the subfeature as if you were doing a direct call but with a few constraints:
providers should take only one provider name, if you input multiple providers, the response of all the other providers will be ignored
file, text, texts shouldn't be present in params as these are initial inputs
Important!: description should be sent as a string since the content-type is a form-data
return_only_last allows you to chose wether you want a list of all the response returned by each providers or just getting the last response. If set to true the response will be the last subfeature result, if set to false the reponse will be a list of all subfeature results.
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