You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: syntax.pb.go
    path of file: ./repos/hubble-ui/backend/vendor/google.golang.org/genproto/googleapis/api/expr/v1alpha1
    
    the code of the file until where you have to start completion: // Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// 	protoc-gen-go v1.26.0
// 	protoc        v3.21.9
// source: google/api/expr/v1alpha1/syntax.proto

package expr

import (
	reflect "reflect"
	sync "sync"

	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
	durationpb "google.golang.org/protobuf/types/known/durationpb"
	structpb "google.golang.org/protobuf/types/known/structpb"
	timestamppb "google.golang.org/protobuf/types/known/timestamppb"
)

const (
	// Verify that this generated code is sufficiently up-to-date.
	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
	// Verify that runtime/protoimpl is sufficiently up-to-date.
	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
)

// An expression together with source information as returned by the parser.
type ParsedExpr struct {
	state         protoimpl.MessageState
	sizeCache     protoimpl.SizeCache
	unknownFields protoimpl.UnknownFields

	// The parsed expression.
	Expr *Expr `protobuf:"bytes,2,opt,name=expr,proto3" json:"expr,omitempty"`
	// The source info derived from input that generated the parsed `expr`.
	SourceInfo *SourceInfo `protobuf:"bytes,3,opt,name=source_info,json=sourceInfo,proto3" json:"source_info,omitempty"`
}

func (x *ParsedExpr) Reset() {
	*x = ParsedExpr{}
	if protoimpl.UnsafeEnabled {
		mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[0]
		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
		ms.StoreMessageInfo(mi)
	}
}

func (x *ParsedExpr) String() string {
	return protoimpl.X.MessageStringOf(x)
}

func (*ParsedExpr) ProtoMessage() {}

func (x *ParsedExpr) ProtoReflect() protoreflect.Message {
	mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[0]
	if protoimpl.UnsafeEnabled && x != nil {
		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
		if ms.LoadMessageInfo() == nil {
			ms.StoreMessageInfo(mi)
		}
		return ms
	}
	return mi.MessageOf(x)
}

// Deprecated: Use ParsedExpr.ProtoReflect.Descriptor instead.
func (*ParsedExpr) Descriptor() ([]byte, []int) {
	return file_google_api_expr_v1alpha1_syntax_proto_rawDescGZIP(), []int{0}
}

func (x *ParsedExpr) GetExpr() *Expr {
	if x != nil {
		return x.Expr
	}
	return nil
}

func (x *ParsedExpr) GetSourceInfo() *SourceInfo {
	if x != nil {
		return x.SourceInfo
	}
	return nil
}

// An abstract representation of a common expression.
//
// Expressions are abstractly represented as a collection of identifiers,
// select statements, function calls, literals, and comprehensions. All
// operators with the exception of the '.' operator are modelled as function
// calls. This makes it easy to represent new operators into the existing AST.
//
// All references within expressions must resolve to a [Decl][google.api.expr.v1alpha1.Decl] provided at
// type-check for an expression to be valid. A reference may either be a bare
// identifier `name` or a qualified identifier `google.api.name`. References
// may either refer to a value or a function dec
    
func file_google_api_expr_v1alpha1_syntax_proto_init() {
	if File_google_api_expr_v1alpha1_syntax_proto != nil {
		return
	}
	if !protoimpl.UnsafeEnabled {
		file_google_api_expr_v1alpha1_syntax_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
			switch v := v.(*ParsedExpr); i {
			case 0:
				return &v.state
			case 1:
				return &v.sizeCache
			case 2:
				return &v.unknownFields
			default:
				return nil
			}
		}
		file_google_api_expr_v1alpha1_syntax_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
			switch v := v.(*Expr); i {
			case 0:
				return &v.state
			case 1:
				return &v.sizeCache
			case 2:
				return &v.unknownFields
			default:
				return nil
			}
		}
		file_google_api_expr_v1alpha1_syntax_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
			switch v := v.(*Constant); i {
			case 0:
				return &v.state
			case 1:
				return &v.sizeCache
			case 2:
				return &v.unknownFields
			default:
				return nil
			}
		}
		file_google_api_expr_v1alpha1_syntax_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
			switch v := v.(*SourceInfo); i {
			case 0:
				return &v.state
			case 1:
				return &v.sizeCache
			case 2:
				return &v.unknownFields
			default:
				return nil
			}
		}
		file_google_api_expr_v1alpha1_syntax_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
			switch v := v.(*SourcePosition); i {
			case 0:
				return &v.state
			case 1:
				return &v.sizeCache
			case 2:
				return &v.unknownFields
			default:
				return nil
			}
		}
		file_google_api_expr_v1alpha1_syntax_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
			switch v := v.(*Expr_Ident); i {
			case 0:
				return &v.state
			case 1:
				return &v.sizeCache
			case 2:
				return &v.unknownFields
			default:
				return nil
			}
		}
		file_google_api_expr_v1alpha1_syntax_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
			switch v := v.(*Expr_Select); i {
			case 0:
				return &v.state
			case 1:
				return &v.sizeCache
			case 2:
				return &v.unknownFields
			default:
				return nil
			}
		}
		file_google_api_expr_v1alpha1_syntax_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
			switch v := v.(*Expr_Call); i {
			case 0:
				return &v.state
			case 1:
				return &v.sizeCache
			case 2:
				return &v.unknownFields
			default:
				return nil
			}
		}
		file_google_api_expr_v1alpha1_syntax_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
			switch v := v.(*Expr_CreateList); i {
			case 0:
				return &v.state
			case 1:
				return &v.sizeCache
			case 2:
				return &v.unknownFields
			default:
				return nil
			}
		}
		file_google_api_expr_v1alpha1_syntax_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
			switch v := v.(*Expr_CreateStruct); i {
			case 0:
				return &v.state
			case 1:
				return &v.sizeCache
			case 2:
				return &v.unknownFields
			default:
				return nil
			}
		}
		file_google_api_expr_v1alpha1_syntax_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
			switch v := v.(*Expr_Comprehension); i {
			case 0:
				return &v.state
			case 1:
				return &v.sizeCache
			case 2:
				return &v.unknownFields
			default:
				return nil
			}
		}
		file_google_api_expr_v1alpha1_syntax_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
			switch v := v.(*Expr_CreateStruct_Entry); i {
			case 0:
				return &v.state
			case 1:
				return &v.sizeCache
			case 2:
				return &v.unknownFields
			default:
				return nil
			}
		}
	}
	file_google_api_expr_v1alpha1_syntax_proto_msgTypes[1].OneofWrappers = []interface{}{
		(*Expr_ConstExpr)(nil),
		(*Expr_IdentExpr)(nil),
		(*Expr_SelectExpr)(nil),
		(*Expr_CallExpr)(nil),
		(*Expr_ListExpr)(nil),
		(*Expr_StructExpr)(nil),
		(*Expr_ComprehensionExpr)(nil),
	}
	file_google_api_expr_v1alpha1_syntax_proto_msgTypes[2].OneofWrappers = []interface{}{
		(*Constant_NullValue)(nil),
		(*Constant_BoolValue)(nil),
		(*Constant_Int64Value)(nil),
		(*Constant_Uint64Value)(nil),
		(*Constant_DoubleValue)(nil),
		(*Constant_StringValue)(nil),
		(*Constant_BytesValue)(nil),
		(*Constant_DurationValue)(nil),
		(*Constant_TimestampValue)(nil),
	}
	file_google_api_expr_v1alpha1_syntax_proto_msgTypes[11].OneofWrappers = []interface{}{
		(*Expr_CreateStruct_Entry_FieldKey)(nil),
		(*Expr_CreateStruct_Entry_MapKey)(nil),
	}
	type x struct{}
	out := protoimpl.TypeBuilder{
		File: protoimpl.DescBuilder{
			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
			RawDescriptor: file_google_api_expr_v1alpha1_syntax_proto_rawDesc,
			NumEnums:      0,
			NumMessages:   14,
			NumExtensions: 0,
			NumServices:   0,
		},
		GoTypes:           file_google_api_expr_v1alpha1_syntax_proto_goTypes,
		DependencyIndexes: file_google_api_expr_v1alpha1_syntax_proto_depIdxs,
		MessageInfos:      file_google_api_expr_v1alpha1_syntax_proto_msgTypes,
	}.Build()
	File_google_api_expr_v1alpha1_syntax_proto = out.File
	file_google_api_expr_v1alpha1_syntax_proto_rawDesc = nil
	file_google_api_expr_v1alpha1_syntax_proto_goTypes = nil
	file_google_api_expr_v1alpha1_syntax_proto_depIdxs = nil
}