'Returns a dict of {<method-name>: (<request-type>, <response-type>)}.'

@classmethod
def _MethodSignatures(cls):

    return {'SignForApp': (SignForAppRequest, SignForAppResponse), 'GetPublicCertificatesForApp': (GetPublicCertificateForAppRequest, GetPublicCertificateForAppResponse), 'GetServiceAccountName': (GetServiceAccountNameRequest, GetServiceAccountNameResponse), 'GetAccessToken': (GetAccessTokenRequest, GetAccessTokenResponse), 'GetDefaultGcsBucketName': (GetDefaultGcsBucketNameRequest, GetDefaultGcsBucketNameResponse)}
