@Override
    public Iterator<Entry<AttributeKey<?>, Object>> attrs() {
        // TODO(ikhoon): Make this method return `AttributesGetters` in Armeria 2.x
        return attrs.attrs();
    }
Returns the {@link Channel} that is handling this request, or {@code null} if the connection is not
established yet.
core/src/main/java/com/linecorp/armeria/internal/common/NonWrappingRequestContext.java