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_broadcast.go
    path of file: ./repos/svix-webhooks/go/internal/openapi
    
    the code of the file until where you have to start completion: /*
 * Svix API
 *
 * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
 *
 * API version: 1.1.1
 */

// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.

package openapi

import (
	"bytes"
	_context "context"
	_ioutil "io/ioutil"
	_nethttp "net/http"
	_neturl "net/url"
)

// Linger please
var (
	_ _context.Context
)

// BroadcastApiService BroadcastApi service
type BroadcastApiService service

type ApiCreateBroadcastMessageRequest struct {
	ctx _context.Context
	ApiService *BroadcastApiService
	messageBroadcastIn *MessageBroadcastIn
	idempotencyKey *string
}

func (r ApiCreateBroadcastMessageRequest) MessageBroadcastIn(messageBroadcastIn MessageBroadcastIn) ApiCreateBroadcastMessageRequest {
	r.messageBroadcastIn = &messageBroadcastIn
	return r
}
func (r ApiCreateBroadcastMessageRequest) IdempotencyKey(idempotencyKey string) ApiCreateBroadcastMessageRequest {
	r.idempotencyKey = &idempotencyKey
	return r
}

func (r ApiCreateBroadcastMessageRequest) Execute() (MessageBroadcastOut, *_nethttp.Response, error) {
	return r.ApiService.CreateBroadcastMessageExecute(r)
}

/*
 * CreateBroadcastMessage Create Broadcast Message
 * Creates a background task to send the same message to each application in your organization
 * @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 * @return ApiCreateBroadcastMessageRequest
 */
func (a *BroadcastApiService) CreateBroadcastMessage(ctx _context.Context) ApiCreateBroadcastMessageRequest {
	return ApiCreateBroadcastMessageRequest{
		ApiService: a,
		ctx: ctx,
	}
}

/*
 * Execute executes the request
 * @return MessageBroadcastOut
 */
func (a *BroadcastApiService) CreateBroadcastMessageExecute(r ApiCreateBroadcastMessageRequest) (MessageBroadcastOut, *_nethttp.Response, error) {
	var (
		localVarHTTPMethod   = _nethttp.MethodPost
		localVarPostBody     interface{}
		localVarFormFileName string
		localVarFileName     string
		localVarFileBytes    []byte
		localVarReturnValue  MessageBroadcastOut
	)

	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "BroadcastApiService.CreateBroadcastMessage")
	if err != nil {
		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
	}

	localVarPath := localBasePath + "/api/v1/msg/broadcast/"

	localVarHeaderParams := make(map[string]string)
	localVarQueryParams := _neturl.Values{}
	localVarFormParams := _neturl.Values{}
	if r.messageBroadcastIn == nil {
		return localVarReturnValue, nil, reportError("messageBroadcastIn is required and must be specified")
	}

	// to determine the Content-Type header
	localVarHTTPContentTypes := []string{"application/json"}

	// set Content-Type header
	localVarHTTPContentType := selectHeaderContentType(localVarHTTPContentTypes)
	if localVarHTTPContentType != "" {
		localVarHeaderParams["Content-Type"] = localVarHTTPContentType
	}

	// to determine the Accept header
	localVarHTTPHeaderAccepts := []string{"application/json"}

	// set Accept header
	localVarHTTPHeaderAccept := selectHeaderAccept(localVarHTTPHeaderAccepts)
	if localVarHTTPHeaderAccept != "" {
		localVarHeaderParams["Accept"] = localVarHTTPHeaderAccept
	}
	if r.idempotencyKey != nil {
		localVarHeaderParams["idempotency-key"] = parameterToString(*r.idempotencyKey, "")
	}
	// body params
	localVarPostBody = r.messageBroadcastIn
	req, err := a.client.prepareRequest(r.ctx, localVarPath, localVarHTTPMethod, localVarPostBody, localVarHeaderParams, localVarQueryParams, localVarFormParams, localVarFormFileName, localVarFileName, localVarFileBytes)
	if err != nil {
		return localVarReturnValue, nil, err
	}

	localVarHTTPResponse, err := a.client.callAPI(req)
	if err != nil || localVarHTTPResponse == nil {
		return localVarReturnValue, localVarHTTPResponse, err
	}

	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
	localVarHTTPResponse.Body.Close()
	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
	if err != nil {
		return localVarReturnValue, localVarHTTPResponse, err
	}

	if localVarHTTPResponse.StatusCode >= 300 {
		newErr := GenericOpenAPIError{
			body:  localVarBody,
			error: localVarHTTPResponse.Status,
		}
		if localVarHTTPResponse.StatusCode == 400 {
			var v HttpErrorOut
			err = a.client.decode(&v, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
			if err != nil {
				newErr.error = err.Error()
				return localVarReturnValue, localVarHTTPResponse, newErr
			}
			newErr.model = v
			return localVarReturnValue, localVarHTTPResponse, newErr
		}
		if localVarHTTPResponse.StatusCode == 401 {
			var v HttpErrorOut
			err = a.client.decode(&v, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
			if err != nil {
				newErr.error = err.Error()
    
func (a *BroadcastApiService) CreateBroadcastMessageExecute(r ApiCreateBroadcastMessageRequest) (MessageBroadcastOut, *_nethttp.Response, error) {
	var (
		localVarHTTPMethod   = _nethttp.MethodPost
		localVarPostBody     interface{}
		localVarFormFileName string
		localVarFileName     string
		localVarFileBytes    []byte
		localVarReturnValue  MessageBroadcastOut
	)

	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "BroadcastApiService.CreateBroadcastMessage")
	if err != nil {
		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
	}

	localVarPath := localBasePath + "/api/v1/msg/broadcast/"

	localVarHeaderParams := make(map[string]string)
	localVarQueryParams := _neturl.Values{}
	localVarFormParams := _neturl.Values{}
	if r.messageBroadcastIn == nil {
		return localVarReturnValue, nil, reportError("messageBroadcastIn is required and must be specified")
	}

	// to determine the Content-Type header
	localVarHTTPContentTypes := []string{"application/json"}

	// set Content-Type header
	localVarHTTPContentType := selectHeaderContentType(localVarHTTPContentTypes)
	if localVarHTTPContentType != "" {
		localVarHeaderParams["Content-Type"] = localVarHTTPContentType
	}

	// to determine the Accept header
	localVarHTTPHeaderAccepts := []string{"application/json"}

	// set Accept header
	localVarHTTPHeaderAccept := selectHeaderAccept(localVarHTTPHeaderAccepts)
	if localVarHTTPHeaderAccept != "" {
		localVarHeaderParams["Accept"] = localVarHTTPHeaderAccept
	}
	if r.idempotencyKey != nil {
		localVarHeaderParams["idempotency-key"] = parameterToString(*r.idempotencyKey, "")
	}
	// body params
	localVarPostBody = r.messageBroadcastIn
	req, err := a.client.prepareRequest(r.ctx, localVarPath, localVarHTTPMethod, localVarPostBody, localVarHeaderParams, localVarQueryParams, localVarFormParams, localVarFormFileName, localVarFileName, localVarFileBytes)
	if err != nil {
		return localVarReturnValue, nil, err
	}

	localVarHTTPResponse, err := a.client.callAPI(req)
	if err != nil || localVarHTTPResponse == nil {
		return localVarReturnValue, localVarHTTPResponse, err
	}

	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
	localVarHTTPResponse.Body.Close()
	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
	if err != nil {
		return localVarReturnValue, localVarHTTPResponse, err
	}

	if localVarHTTPResponse.StatusCode >= 300 {
		newErr := GenericOpenAPIError{
			body:  localVarBody,
			error: localVarHTTPResponse.Status,
		}
		if localVarHTTPResponse.StatusCode == 400 {
			var v HttpErrorOut
			err = a.client.decode(&v, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
			if err != nil {
				newErr.error = err.Error()
				return localVarReturnValue, localVarHTTPResponse, newErr
			}
			newErr.model = v
			return localVarReturnValue, localVarHTTPResponse, newErr
		}
		if localVarHTTPResponse.StatusCode == 401 {
			var v HttpErrorOut
			err = a.client.decode(&v, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
			if err != nil {
				newErr.error = err.Error()
				return localVarReturnValue, localVarHTTPResponse, newErr
			}
			newErr.model = v
			return localVarReturnValue, localVarHTTPResponse, newErr
		}
		if localVarHTTPResponse.StatusCode == 403 {
			var v HttpErrorOut
			err = a.client.decode(&v, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
			if err != nil {
				newErr.error = err.Error()
				return localVarReturnValue, localVarHTTPResponse, newErr
			}
			newErr.model = v
			return localVarReturnValue, localVarHTTPResponse, newErr
		}
		if localVarHTTPResponse.StatusCode == 404 {
			var v HttpErrorOut
			err = a.client.decode(&v, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
			if err != nil {
				newErr.error = err.Error()
				return localVarReturnValue, localVarHTTPResponse, newErr
			}
			newErr.model = v
			return localVarReturnValue, localVarHTTPResponse, newErr
		}
		if localVarHTTPResponse.StatusCode == 409 {
			var v HttpErrorOut
			err = a.client.decode(&v, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
			if err != nil {
				newErr.error = err.Error()
				return localVarReturnValue, localVarHTTPResponse, newErr
			}
			newErr.model = v
			return localVarReturnValue, localVarHTTPResponse, newErr
		}
		if localVarHTTPResponse.StatusCode == 422 {
			var v HTTPValidationError
			err = a.client.decode(&v, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
			if err != nil {
				newErr.error = err.Error()
				return localVarReturnValue, localVarHTTPResponse, newErr
			}
			newErr.model = v
			return localVarReturnValue, localVarHTTPResponse, newErr
		}
		if localVarHTTPResponse.StatusCode == 429 {
			var v HttpErrorOut
			err = a.client.decode(&v, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
			if err != nil {
				newErr.error = err.Error()
				return localVarReturnValue, localVarHTTPResponse, newErr
			}
			newErr.model = v
		}
		return localVarReturnValue, localVarHTTPResponse, newErr
	}

	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
	if err != nil {
		newErr := GenericOpenAPIError{
			body:  localVarBody,
			error: err.Error(),
		}
		return localVarReturnValue, localVarHTTPResponse, newErr
	}

	return localVarReturnValue, localVarHTTPResponse, nil
}