pub fn serialize(&self) -> Option<String> {
        if self.params.is_empty() {
            None
        } else {
            Some(crate::util::url::encoded_pairs(
                self.params.iter().map(|(k, v)| (k, v)),
            ))
        }
    }
/// serialize Opts as a string. returns None if no Opts are defined
serialize Opts as a string. returns None if no Opts are defined
serialize Opts as a string . returns None if no Opts are defined
pub fn serialize(&self) -> Option<String> {
        if self.params.is_empty() {
            None
        } else {
            Some(crate::util::url::encoded_pairs(
                self.params.iter().map(|(k, v)| (k, v)),
            ))
        }
    }
pub fn serialize ( & self ) -> Option < String > { if self . params . is_empty ( ) { None } else { Some ( crate :: util :: url :: encoded_pairs ( self . params . iter ( ) . map ( | ( k , v ) | ( k , v ) ) , ) ) } }
serialize Opts as a string.
serialize Opts as a string .
&self
&self