Gets bytes from an API. The data loader will send a post request to the url with with a jsonified object containing the datasource and column information
{ "data_source":"mydataource" "columns":[{"field":"x1","datatype":"integer"}] }
returns a dataloader
{string} - The url of the api
a dataloader that can be used to construct ChartManager
Gets bytes from an API. The data loader will send a post request to the url with with a jsonified object containing the datasource and column information
returns a dataloader