This function defines the standard Yahoo URL for the API call
build_yahoo_url(symbol, from, to, interval = "1d", event, handle)
Refers to the ticker of the company
Initial date
Final date
Specifies the time frame used in the data. Can be '1d', '1wk' or '1mo'
What type of event is being recorded. Can be 'div' for dividends, 'history' for price history or 'split'.
handle object