/// Add a tag to this Measurement
Add a tag to this Measurement
Add a tag to this Measurement
pub fn tag(&mut self, key: &str, value: &str) -> &mut Self
    {
        self.tags.insert(key.to_owned(), value.to_owned());
        self
    }
pub fn tag ( & mut self , key : & str , value : & str ) -> & mut Self { self . tags . insert ( key . to_owned ( ) , value . to_owned ( ) ) ; self }
Add a tag to this Measurement
Add a tag to this Measurement
&mut self
key
&str
value
&str