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: create_finding_with_source_properties.go
    path of file: ./repos/golang-samples/securitycenter/findings
    
    the code of the file until where you have to start completion: // Copyright 2019 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
//
//     https://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.

package findings

// [START securitycenter_create_finding_with_source_properties]
import (
	"context"
	"fmt"
	"io"
	"time"

	securitycenter "cloud.google.com/go/securitycenter/apiv1"
	"cloud.google.com/go/securitycenter/apiv1/securitycenterpb"
	"github.com/golang/protobuf/ptypes"
	structpb "github.com/golang/protobuf/ptypes/struct"
)

// createFindingWithProperties demonstrates how to create a new security
// finding in CSCC that includes additional metadata via sourceProperties.
// sourceName is the full resource name of the source the finding should be
// associated with.
func createFindingWithProperties(w io.Writer, sourceName string) error {
	// sourceName := "organizations/111122222444/sources/1234"
	// Instantiate a context and a security service client to make API calls.
	ctx := context.Background()
	client, err := securitycenter.NewClient(ctx)
	if er
    
func createFindingWithProperties(w io.Writer, sourceName string) error {
	// sourceName := "organizations/111122222444/sources/1234"
	// Instantiate a context and a security service client to make API calls.
	ctx := context.Background()
	client, err := securitycenter.NewClient(ctx)
	if err != nil {
		return fmt.Errorf("securitycenter.NewClient: %w", err)
	}
	defer client.Close() // Closing the client safely cleans up background resources.
	// Use now as the eventTime for the security finding.
	eventTime, err := ptypes.TimestampProto(time.Now())
	if err != nil {
		return fmt.Errorf("TimestampProto: %w", err)
	}

	req := &securitycenterpb.CreateFindingRequest{
		Parent:    sourceName,
		FindingId: "samplefindingprops",
		Finding: &securitycenterpb.Finding{
			State: securitycenterpb.Finding_ACTIVE,
			// Resource the finding is associated with.  This is an
			// example any resource identifier can be used.
			ResourceName: "//cloudresourcemanager.googleapis.com/organizations/11232",
			// A free-form category.Error converting now
			Category: "MEDIUM_RISK_ONE",
			// The time associated with discovering the issue.
			EventTime: eventTime,
			// Define key-value pair metadata to include with the finding.
			SourceProperties: map[string]*structpb.Value{
				"s_value": {
					Kind: &structpb.Value_StringValue{StringValue: "string_example"},
				},
				"n_value": {
					Kind: &structpb.Value_NumberValue{NumberValue: 1234},
				},
			},
		},
	}

	finding, err := client.CreateFinding(ctx, req)
	if err != nil {
		return fmt.Errorf("CreateFinding: %w", err)
	}
	fmt.Fprintf(w, "New finding created: %s\n", finding.Name)
	fmt.Fprintf(w, "Event time (Epoch Seconds): %d\n", eventTime.Seconds)
	fmt.Fprintf(w, "Source Properties:\n")
	for k, v := range finding.SourceProperties {
		fmt.Fprintf(w, "%s = %v\n", k, v)
	}

	return nil
}