Add some explicit conversion methods

src/status.rs

@@ -61,6 +61,11 @@ impl StatusCode {
         Ok(StatusCode(status))
     }
 
+    /// Returns the u16 corresponding to this status code
+    pub fn as_u16(&self) -> u16 {
+        (*self).into()
+    }
+
     /// Check if class is Informational.
     pub fn is_informational(&self) -> bool {
         200 > self.0 && self.0 >= 100

src/uri.rs

@@ -711,6 +711,11 @@ impl Scheme {
             None => unreachable!(),
         }
     }
+
+    /// Converts this `Scheme` back to a sequence of bytes
+    pub fn into_bytes(self) -> Bytes {
+        self.into()
+    }
 }
 
 impl FromStr for Scheme {
@@ -922,6 +927,11 @@ impl Authority {
     pub fn as_str(&self) -> &str {
         &self.data[..]
     }
+
+    /// Converts this `Authority` back to a sequence of bytes
+    pub fn into_bytes(self) -> Bytes {
+        self.into()
+    }
 }
 
 impl FromStr for Authority {
@@ -1096,6 +1106,11 @@ impl OriginForm {
             Some(&self.data[i as usize..])
         }
     }
+
+    /// Converts this `OriginForm` back to a sequence of bytes
+    pub fn into_bytes(self) -> Bytes {
+        self.into()
+    }
 }
 
 impl FromStr for OriginForm {