## Params:
-* ```string $header```
+* string $header
The complete string of headers.
-* Optional ```string $header_class```
+* Optional string $header_class
A class extending http\Header.
## Returns:
-* ```array``` of parsed headers, where the elements are instances of $header_class if specified.
+* array of parsed headers, where the elements are instances of $header_class if specified.