/// Appends a header to the back of the list of headers
/// ```no_run
/// # use dfn_http::*;
/// Response
///    ::from_status_code(200)
///    .push_header("Content-Type", "text/html");
/// ```
Appends a header to the back of the list of headers
```no_run
Appends a header to the back of the list of headers ` ` ` no_run
pub fn push_header(mut self, field: &str, value: &str) -> Self {
        self.headers.push(Header {
            field: field.to_string(),
            value: value.to_string(),
        });
        self
    }
pub fn push_header ( mut self , field : & str , value : & str ) -> Self { self . headers . push ( Header { field : field . to_string ( ) , value : value . to_string ( ) , } ) ; self }
Appends a header to the back of the list of headers
```no_run
Appends a header to the back of the list of headers ` ` ` no_run
mut self
field
&str
value
&str
use dfn_http::*;
Response
::from_status_code(200)
.push_header("Content-Type", "text/html");
```
Response :: from_status_code ( 200 ) . push_header ( " Content - Type " " text / html " ) ; ` ` `