def hdrs.low
import bend-kit-sigv4@0.11.0.1/sigv4.bend as Sigv4import Base
198def hdrs.low(xs: List<&2, Sigma<&2, &2, String, _ => String>>) -> List<&2, Sigma<&2, &2, String, _ => String>>:
199 match xs:
200 case Nil{}:
201 Nil{}
202 case Con{(n, v), t}:
203 Con{(String.to_lower(n), squash(String.trim(v), False{})), hdrs.low(t)}