Function json_api::to_writer

pub fn to_writer<W, T, U>(
    writer: W, 
    value: T, 
    query: Option<&Query>
) -> Result<(), Error> where
    W: Write,
    T: Render<U>,
    U: PrimaryData, 

Render type T as a Document<U> and then serialize it as JSON into the IO stream.