Generated scaffolding code is not working...

Hi All , I followed all the instructions and created the Template extension , generated code is not working ( azdev extension create NewTestOperations --local-sdk "C:\github\sdks\azure-mgmt-maps-0.1.0\azure-mgmt-maps-0.1.0" --operation-name AccountsOperations --client-name MapsManagementClient --sdk-property account_name --github-alias subbartt)
1) az NewTestOperations -h is only displaying single command , where as commands file has mutliple command. It is only displaying first command.
2) Running the command az NewTestOperations create is also failing with below error
(env) c:\github\azure-cli-extensions\src\NewTestOperations>az NewTestOperations create
The command failed with an unexpected error. Here is the traceback:

''
Traceback (most recent call last):
File "c:\github\env\lib\site-packages\knack\cli.py", line 206, in invoke
cmd_result = self.invocation.execute(args)
File "c:\github\env\lib\site-packages\azure\cli\core\commands\__init__.py", line 566, in execute
command_source = self.commands_loader.command_table[command].command_source
KeyError: ''

Can some check this?

Also orthogonal to this , do you have general debugging instructions how to step through the extension code while developing extension , that would help a lot.