Add two more APIs that were on another file.

group.go

@@ -436,8 +436,8 @@ func (g *Group) Dump(recurse bool) (string, error) {
 	return C.GoString(cOutput), nil
 }
 
-// SerializeGroupMetadata gets and serializes the group metadata
-func SerializeGroupMetadata(g *Group, serializationType SerializationType) ([]byte, error) {
+// SerializeGroupMetadata gets and serializes the group metadata and returns a Buffer object containing the payload
+func SerializeGroupMetadataToBuffer(g *Group, serializationType SerializationType) (*Buffer, error) {
 	buffer := Buffer{context: g.context}
 	freeOnGC(&buffer)
 
@@ -446,6 +446,18 @@ func SerializeGroupMetadata(g *Group, serializationType SerializationType) ([]by
 		return nil, fmt.Errorf("Error serializing group metadata: %s", g.context.LastError())
 	}
 
+	return &buffer, nil
+}
+
+// SerializeGroupMetadata gets and serializes the group metadata
+//
+// Deprecated: Use SerializeGroupMetadataToBuffer instead.
+func SerializeGroupMetadata(g *Group, serializationType SerializationType) ([]byte, error) {
+	buffer, err := SerializeGroupMetadataToBuffer(g, serializationType)
+	if err != nil {
+		return nil, err
+	}
+
 	return buffer.Serialize(serializationType)
 }
 

serialize_array_schema_evolution.go

@@ -10,8 +10,8 @@ import (
 	"fmt"
 )
 
-// SerializeArraySchemaEvolution serializes the given array schema evolution.
-func SerializeArraySchemaEvolution(arraySchemaEvolution *ArraySchemaEvolution, serializationType SerializationType, clientSide bool) ([]byte, error) {
+// SerializeArraySchemaEvolution serializes the given array schema evolution and serializes the group metadata and returns a Buffer object containing the payload.
+func SerializeArraySchemaEvolutionToBuffer(arraySchemaEvolution *ArraySchemaEvolution, serializationType SerializationType, clientSide bool) (*Buffer, error) {
 	var cClientSide C.int32_t
 	if clientSide {
 		cClientSide = 1
@@ -32,6 +32,18 @@ func SerializeArraySchemaEvolution(arraySchemaEvolution *ArraySchemaEvolution, s
 			arraySchemaEvolution.context.LastError())
 	}
 
+	return &buffer, nil
+}
+
+// SerializeArraySchemaEvolution serializes the given array schema evolution.
+//
+// Deprecated: Use SerializeArraySchemaEvolutionToBuffer instead.
+func SerializeArraySchemaEvolution(arraySchemaEvolution *ArraySchemaEvolution, serializationType SerializationType, clientSide bool) ([]byte, error) {
+	buffer, err := SerializeArraySchemaEvolutionToBuffer(arraySchemaEvolution, serializationType, clientSide)
+	if err != nil {
+		return nil, err
+	}
+
 	return buffer.Serialize(serializationType)
 }