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: sql_managedinstance.go
    path of file: ./repos/terratest/modules/azure
    
    the code of the file until where you have to start completion: package azure

import (
	"context"

	"github.com/Azure/azure-sdk-for-go/services/preview/sql/mgmt/v3.0/sql"
	"github.com/gruntwork-io/terratest/modules/testing"
	"github.com/stretchr/testify/require"
)

// SQLManagedInstanceExists indicates whether the SQL Managed Instance exists for the subscription.
// This function would fail the test if there is an error.
func SQLManagedInstanceExists(t testing.TestingT, managedInstanceName string, resourceGroupNa
    
func GetManagedInstanceDatabaseE(t testing.TestingT, subscriptionID string, resGroupName string, managedInstanceName string, databaseName string) (*sql.ManagedDatabase, error) {
	// Create a SQlMI db client
	sqlmiDbClient, err := CreateSQLMangedDatabasesClient(subscriptionID)
	if err != nil {
		return nil, err
	}

	//Get the corresponding  client
	sqlmidb, err := sqlmiDbClient.Get(context.Background(), resGroupName, managedInstanceName, databaseName)
	if err != nil {
		return nil, err
	}

	//Return sql mi db
	return &sqlmidb, nil
}