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: api_op_GetBasePathMappings.go
    path of file: ./repos/aws-sdk-go-v2/service/apigateway
    
    the code of the file until where you have to start completion: // Code generated by smithy-go-codegen DO NOT EDIT.

package apigateway

import (
	"context"
	"fmt"
	awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
	"github.com/aws/aws-sdk-go-v2/service/apigateway/types"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
)

// Represents a collection of BasePathMapping resources.
func (c *Client) GetBasePathMappings(ctx context.Context, params *GetBasePathMappingsInput, optFns ...func(*Options)) (*GetBasePathMappingsOutput, error) {
	if params == nil {
		params = &GetBasePathMappingsInput{}
	}

	result, metadata, err := c.invokeOperation(ctx, "GetBasePathMappings", params, optFns, c.addOperationGetBasePathMappingsMiddlewares)
	if err != nil {
		return nil, err
	}

	out := result.(*GetBasePathMappingsOutput)
	out.ResultMetadata = metadata
	return out, nil
}

// A request to get information about a collection of BasePathMapping resources.
type GetBasePathMappingsInput struct {

	// The domain name of a BasePathMapping resource.
	//
	// This member is required.
	DomainName *string

	// The maximum number of returned results per page. The default value is 25 and
	// the maximum value is 500.
	Limit *int32

	// The current pagination position in the paged result set.
	Position *string

	noSmithyDocumentSerde
}

// Represents a collection of BasePathMapping resources.
type GetBasePathMappingsOutput struct {

	// The current page of elements from this collection.
	Items
    
func (c *Client) addOperationGetBasePathMappingsMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsRestjson1_serializeOpGetBasePathMappings{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsRestjson1_deserializeOpGetBasePathMappings{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "GetBasePathMappings"); err != nil {
		return fmt.Errorf("add protocol finalizers: %v", err)
	}

	if err = addlegacyEndpointContextSetter(stack, options); err != nil {
		return err
	}
	if err = addSetLoggerMiddleware(stack, options); err != nil {
		return err
	}
	if err = addClientRequestID(stack); err != nil {
		return err
	}
	if err = addComputeContentLength(stack); err != nil {
		return err
	}
	if err = addResolveEndpointMiddleware(stack, options); err != nil {
		return err
	}
	if err = addComputePayloadSHA256(stack); err != nil {
		return err
	}
	if err = addRetry(stack, options); err != nil {
		return err
	}
	if err = addRawResponseToMetadata(stack); err != nil {
		return err
	}
	if err = addRecordResponseTiming(stack); err != nil {
		return err
	}
	if err = addClientUserAgent(stack, options); err != nil {
		return err
	}
	if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = addSetLegacyContextSigningOptionsMiddleware(stack); err != nil {
		return err
	}
	if err = addOpGetBasePathMappingsValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opGetBasePathMappings(options.Region), middleware.Before); err != nil {
		return err
	}
	if err = addRecursionDetection(stack); err != nil {
		return err
	}
	if err = addRequestIDRetrieverMiddleware(stack); err != nil {
		return err
	}
	if err = addResponseErrorMiddleware(stack); err != nil {
		return err
	}
	if err = addAcceptHeader(stack); err != nil {
		return err
	}
	if err = addRequestResponseLogging(stack, options); err != nil {
		return err
	}
	if err = addDisableHTTPSMiddleware(stack, options); err != nil {
		return err
	}
	return nil
}