in bindings/xlb/src/edge_binding.ts [213:223]
addHeader(key: string, value: string) {
this.headerMutation.setHeaders.push(
create(HeaderValueOptionSchema, {
header: {
key: key,
rawValue: new TextEncoder().encode(value),
},
appendAction: HeaderValueOption_HeaderAppendAction.OVERWRITE_IF_EXISTS_OR_ADD,
}),
);
}