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diff --git a/vendor/google.golang.org/appengine/search/field.go b/vendor/google.golang.org/appengine/search/field.go
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+++ b/vendor/google.golang.org/appengine/search/field.go
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+// Copyright 2014 Google Inc. All rights reserved.
+// Use of this source code is governed by the Apache 2.0
+// license that can be found in the LICENSE file.
+
+package search
+
+// Field is a name/value pair. A search index's document can be loaded and
+// saved as a sequence of Fields.
+type Field struct {
+	// Name is the field name. A valid field name matches /[A-Za-z][A-Za-z0-9_]*/.
+	Name string
+	// Value is the field value. The valid types are:
+	//  - string,
+	//  - search.Atom,
+	//  - search.HTML,
+	//  - time.Time (stored with millisecond precision),
+	//  - float64,
+	//  - GeoPoint.
+	Value interface{}
+	// Language is a two-letter ISO 639-1 code for the field's language,
+	// defaulting to "en" if nothing is specified. It may only be specified for
+	// fields of type string and search.HTML.
+	Language string
+	// Derived marks fields that were calculated as a result of a
+	// FieldExpression provided to Search. This field is ignored when saving a
+	// document.
+	Derived bool
+}
+
+// Facet is a name/value pair which is used to add categorical information to a
+// document.
+type Facet struct {
+	// Name is the facet name. A valid facet name matches /[A-Za-z][A-Za-z0-9_]*/.
+	// A facet name cannot be longer than 500 characters.
+	Name string
+	// Value is the facet value.
+	//
+	// When being used in documents (for example, in
+	// DocumentMetadata.Facets), the valid types are:
+	//  - search.Atom,
+	//  - float64.
+	//
+	// When being used in SearchOptions.Refinements or being returned
+	// in FacetResult, the valid types are:
+	//  - search.Atom,
+	//  - search.Range.
+	Value interface{}
+}
+
+// DocumentMetadata is a struct containing information describing a given document.
+type DocumentMetadata struct {
+	// Rank is an integer specifying the order the document will be returned in
+	// search results. If zero, the rank will be set to the number of seconds since
+	// 2011-01-01 00:00:00 UTC when being Put into an index.
+	Rank int
+	// Facets is the set of facets for this document.
+	Facets []Facet
+}
+
+// FieldLoadSaver can be converted from and to a slice of Fields
+// with additional document metadata.
+type FieldLoadSaver interface {
+	Load([]Field, *DocumentMetadata) error
+	Save() ([]Field, *DocumentMetadata, error)
+}
+
+// FieldList converts a []Field to implement FieldLoadSaver.
+type FieldList []Field
+
+// Load loads all of the provided fields into l.
+// It does not first reset *l to an empty slice.
+func (l *FieldList) Load(f []Field, _ *DocumentMetadata) error {
+	*l = append(*l, f...)
+	return nil
+}
+
+// Save returns all of l's fields as a slice of Fields.
+func (l *FieldList) Save() ([]Field, *DocumentMetadata, error) {
+	return *l, nil, nil
+}
+
+var _ FieldLoadSaver = (*FieldList)(nil)