用于将Google IDP添加到Cognito IdentityPoolRoleAttachment中的Cloudformation模板？

如何解决用于将Google IDP添加到Cognito IdentityPoolRoleAttachment中的Cloudformation模板？

这是我的Google IDP配置的样子：

“MyGoogleIdP": {
  "Type": "AWS::Cognito::UserPoolIdentityProvider","Properties": {
    "ProviderDetails": {
      "client_id": “XXXXXXXX.apps.googleusercontent.com","client_secret": “XXX_xxx”,"authorize_scopes": "profile email openid"
    },"ProviderName": "Google","ProviderType": "Google","UserPoolId": {
      "Ref": “MyCognitoPool"
    },"AttributeMapping": {
      "email": "email"
    }
  }
}

身份池配置：

“MyIdentityPool": {
      "Type": "AWS::Cognito::IdentityPool","Properties": {
        "AllowUnauthenticatedIdentities": false,"CognitoIdentityProviders": [
          {
            "ClientId": {
              "Ref": "MyCognitoClient"
            },"ProviderName": {
              "Fn::GetAtt": ["MyCognitoPool","ProviderName"]
            }
          }
        ],"IdentityPoolName": {
          "Fn::Sub": "my-${CustomDomain}"
        }
      }
    }

身份池角色附件配置：

"MyIdentityPoolRoleAttachment": {
  "Type": "AWS::Cognito::IdentityPoolRoleAttachment","Properties": {
    "IdentityPoolId": {
      "Ref": "MyIdentityPool"
    },"Roles": {
      "authenticated":{
           "Fn::GetAtt":[
              "UnAuthorizedUserRole","Arn"
           ]
        }
    },"RoleMappings": {
      "MyGoogleIdP": {
        "IdentityProvider": {
          "Ref": "MyGoogleIdP"
        },"AmbiguousRoleResolution": "Deny","Type": "Rules"
      },“MyCognitoPool": {
        "IdentityProvider": {
          "Ref": “MyCognitoPool"
        },"Type": "Rules"
      }
    }
  }
}

在AWS docs中，这是他们将Facebook身份提供程序添加到RoleMappings中的方式：

"IdentityProvider":"graph.facebook.com"

这是他们将其认知池添加到RoleMappings的方式：

"IdentityProvider":{
                  "Ref":"CognitoUserPool"
               }

我的问题是，如何将Google身份提供商添加到RoleMappings？如上面的示例代码所示，我尝试使用"Ref": "MyGoogleIdP"，但收到此错误： (Google) is not a valid RoleMapping ProviderName or is not a configured provider.