header method
Get the value of a specific response header.
Header names are case-insensitive. Returns the first value if multiple values exist for the same header.
Example:
expect(response.header('content-type'), 'application/json');
expect(response.header('X-RateLimit-Remaining'), '99');
name Header name (case-insensitive).
Returns the header value or null if not present.
Implementation
String? header(String name) {
return _response.headers.value(name.toLowerCase());
}