Temporarily add go-agentx (w/ fixes to lexico ordering)

go-agentx/pdu/get_next.go

@@ -0,0 +1,28 @@
+// Copyright 2018 The agentx authors
+// Licensed under the LGPLv3 with static-linking exception.
+// See LICENCE file for details.
+
+package pdu
+
+// GetNext defines the pdu get next packet.
+type GetNext struct {
+	SearchRanges Ranges
+}
+
+// Type returns the pdu packet type.
+func (g *GetNext) Type() Type {
+	return TypeGetNext
+}
+
+// MarshalBinary returns the pdu packet as a slice of bytes.
+func (g *GetNext) MarshalBinary() ([]byte, error) {
+	return []byte{}, nil
+}
+
+// UnmarshalBinary sets the packet structure from the provided slice of bytes.
+func (g *GetNext) UnmarshalBinary(data []byte) error {
+	if err := g.SearchRanges.UnmarshalBinary(data); err != nil {
+		return err
+	}
+	return nil
+}