def ls(self,
	       directory,
	       note=None,
	       loglevel=logging.DEBUG):
		"""Helper proc to list files in a directory

		@param directory:   directory to list.  If the directory doesn't exist, shutit.fail() is called (i.e.  the build fails.)
		@param note:        See send()

		@type directory:    string

		@rtype:             list of strings
		"""
		shutit_global.shutit_global_object.yield_to_draw()
		shutit_pexpect_session = self.get_current_shutit_pexpect_session()
		return shutit_pexpect_session.is_shutit_installed(directory,note=note,loglevel=loglevel)
Helper proc to list files in a directory

		@param directory:   directory to list.  If the directory doesn't exist, shutit.fail() is called (i.e.  the build fails.)
		@param note:        See send()

		@type directory:    string

		@rtype:             list of strings