from graphene.commands.command import Command

class ExitCommand(Command):
    def __init__(self):
        pass

from graphene.commands.command import Command

class ExitCommand(Command):
    def __init__(self):
        pass

    def execute(self, storage_manager, timer=None):
        # This should never be used anyway.
        pass

Fix EXIT command to have execute method for abstract class
Fix EXIT command to have execute method for abstract class
