Add Get Field Mapping API

Author: olivere

indices_get_field_mapping.go

@@ -1,3 +1,7 @@
+// Copyright 2012-present Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
 package elastic
 
 import (
@@ -37,9 +41,6 @@ func NewGetFieldMappingService(client *Client) *IndicesGetFieldMappingService {
 func NewIndicesGetFieldMappingService(client *Client) *IndicesGetFieldMappingService {
 	return &IndicesGetFieldMappingService{
 		client: client,
-		index:  make([]string, 0),
-		typ:    make([]string, 0),
-		field:  make([]string, 0),
 	}
 }
 

indices_get_field_mapping_test.go

@@ -1,3 +1,7 @@
+// Copyright 2012-present Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
 package elastic
 
 import (