pub fn extra_header<K, V>(&self, key: K, value: V) -> FrozenSendBuilder
    where
        HeaderName: TryFrom<K>,
        <HeaderName as TryFrom<K>>::Error: Into<HttpError>,
        V: IntoHeaderValue,
    {
        self.extra_headers(HeaderMap::new())
            .extra_header(key, value)
    }
/// Create a `FrozenSendBuilder` with an extra header
Create a `FrozenSendBuilder` with an extra header
Create a ` FrozenSendBuilder ` with an extra header
pub fn extra_header<K, V>(&self, key: K, value: V) -> FrozenSendBuilder
    where
        HeaderName: TryFrom<K>,
        <HeaderName as TryFrom<K>>::Error: Into<HttpError>,
        V: IntoHeaderValue,
    {
        self.extra_headers(HeaderMap::new())
            .extra_header(key, value)
    }
pub fn extra_header < K , V > ( & self , key : K , value : V ) -> FrozenSendBuilder where HeaderName : TryFrom < K > , < HeaderName as TryFrom < K > > :: Error : Into < HttpError > , V : IntoHeaderValue , { self . extra_headers ( HeaderMap :: new ( ) ) . extra_header ( key , value ) }
Create a `FrozenSendBuilder` with an extra header
Create a ` FrozenSendBuilder ` with an extra header
&self
key
K
value
V
&self
key
K
value
V