warnings FATAL => 'all';
use LWP::UserAgent;
use URL::Encode 'url_encode';
use Data::Dumper;
use JSON;
=head1 NAME
Microsoft::Azure::AccessToken - Microsoft Azure Access Token implementation
=head
) {
my $resturn = undef;
my $content = $response->decoded_content;
my $js = eval { decode_json( $content ) };
if ( $@ ) {
print STDERR "Unable to parse response\n";
return undef;
}