for each element in 'compare', if NOT in 'src', it will be added to the resulting 'diff' if you want to add from an existing, compared to another list, src => existing; compare => new list if you wnat to delete from to an existing, compared to another list, src => new list; compare => existing.

a simplified http client to call external http servers, it is designed to fail if the status code is not in the 200's inputs: method: standard http method, i.e.: POST, GET, PATCH, etc url: the full http url bodyIn: map or struct, this function will json.Marshal it for the body payload, pass in 'nil' if not needed bodyOut: map or *struct, this function will json.Unmarshal the response.Body to this variable headers: map[string]string of headers to add to the request.