set(name, value) {
		name = `${name}`;
		value = `${value}`;
		validateName$5(name);
		validateValue$5(value);
		const key = find$5(this[MAP$5], name);
		this[MAP$5][key !== undefined ? key : name] = [value];
	}
Overwrite header values given name

@param   String  name   Header name
@param   String  value  Header value
@return  Void