Azure AD Application - Change Notification Email through PowerShell?

I have several applications added in Azure AD. These applications are all configured with SAML Single Sign-On (SSO) (screenshot here).

In the SAML SSO configuration page, there is a setting for Notification Email, which is the email address that will be notified when the SAML signing certificate is close to expiration (screenshot here).

I want to be able to programmatically change the notification email on an Azure AD app through PowerShell.I have been exploring with the cmdlet Get-AzureADApplication, but I don't seem to find the "notification email" property, and therefore not sure how to set it.

Here is the output of Get-AzureADApplication on a Test App. No "notification email" property:

DeletionTimestamp          : 
ObjectId                   : 24dcf6a8-2746-4ba9-af54-062ac39d5a4d
ObjectType                 : Application
AddIns                     : {}
AllowGuestsSignIn          : 
AllowPassthroughUsers      : 
AppId                      : c95bca7f-5c32-4a17-9d3f-89234124fad7
AppLogoUrl                 : 
AppRoles                   : {class AppRole {
                               AllowedMemberTypes: System.Collections.Generic.List`1[System.String]
                               Description: User
                               DisplayName: User
                               Id: 18d14569-c3bd-439b-9a66-3a2aee01d14f
                               IsEnabled: True
                               Value: 
                             }
                             , class AppRole {
                               AllowedMemberTypes: System.Collections.Generic.List`1[System.String]
                               Description: msiam_access
                               DisplayName: msiam_access
                               Id: b9632174-c057-4f7e-951b-be3adc52bfe6
                               IsEnabled: True
                               Value: 
                             }
                             }
AvailableToOtherTenants    : False
DisplayName                : TestApp
ErrorUrl                   : 
GroupMembershipClaims      : 
Homepage                   : https://account.activedirectory.windowsazure.com:444/applications/default.aspx?metadata=customappsso|ISV9.1|primary|z
IdentifierUris             : {test.com}
InformationalUrls          : class InformationalUrl {
                               TermsOfService: 
                               Marketing: 
                               Privacy: 
                               Support: 
                             }
IsDeviceOnlyAuthSupported  : 
IsDisabled                 : 
KeyCredentials             : {}
KnownClientApplications    : {}
LogoutUrl                  : 
Oauth2AllowImplicitFlow    : False
Oauth2AllowUrlPathMatching : False
Oauth2Permissions          : {class OAuth2Permission {
                               AdminConsentDescription: Allow the application to access TestApp on behalf of the signed-in user.
                               AdminConsentDisplayName: Access TestApp
                               Id: 4a22a7ad-f133-46e7-b5fb-915914da8894
                               IsEnabled: True
                               Type: User
                               UserConsentDescription: Allow the application to access TestApp on your behalf.
                               UserConsentDisplayName: Access TestApp
                               Value: user_impersonation
                             }
                             }
Oauth2RequirePostResponse  : False
OrgRestrictions            : {}
OptionalClaims             : 
ParentalControlSettings    : class ParentalControlSettings {
                               CountriesBlockedForMinors: System.Collections.Generic.List`1[System.String]
                               LegalAgeGroupRule: Allow
                             }
PasswordCredentials        : {}
PreAuthorizedApplications  : 
PublicClient               : False
PublisherDomain            : <redacted>
RecordConsentConditions    : 
ReplyUrls                  : {https://testc.om}
RequiredResourceAccess     : {}
SamlMetadataUrl            : 
SignInAudience             : AzureADMyOrg
WwwHomepage                :