human
Solve the following python programming problem given the following code:
def add_command_parsers(subparsers) : 
    def add_id(parser) : 
        parser.add_argument ('--id', required = True, help = 'The id of the default template to delete') 
def add_tenant_id(parser) : 
        parser.add_argument ('-t', '--tenant_id', required = True, help = 'Tenant ID for database operations.') 
def add_name_and_tenant_id(parser) : 
        parser.add_argument ('--name', dest = 'template_name', required = True, help = 'Name of the default template') 
        add_tenant_id (parser) 
def add_plugin_name_and_version(parser, require_plugin_name = False) : 
        plugin_name_help = 'Only process templates containing a "plugin_name" field matching one of these values.' 
        if (not require_plugin_name) : 
            extra = ' The default list of plugin names is taken from the "plugins" parameter in the [DEFAULT] config section.' 
            plugin_name_help += extra 
parser.add_argument ('-p', '--plugin-name', nargs = '*', required = require_plugin_name, help = plugin_name_help) 
        parser.add_argument ('-pv', '--plugin-version', nargs = '*', help = 'Only process templates containing a "hadoop_version" field matching one of these values. This option is only valid if --plugin-name is specified as well. A version specified here may optionally be prefixed with a plugin name and a dot, for example "vanilla.1.2.1". Dotted versions only apply to the plugin named in the prefix. Versions without a prefix apply to all plugins.') 
fname = pkg.resource_filename (version.version_info.package, 'plugins/default_templates') 
    parser = subparsers.add_parser ('update', help = 'Update the default template set') 
    parser.add_argument ('-d', '--directory', default = fname, help = ('Template directory. Default is %s' % fname)) 
    parser.add_argument ('-n', '--norecurse', action = 'store_true', help = 'Do not descend into subdirectories') 
    add_plugin_name_and_version (parser) 
    add_tenant_id (parser) 
    parser.set_defaults (func = api.do_update) 
    parser = subparsers.add_parser...

    
    

    Fix the buggy line: add_plugin_name_and_version (add_plugin_name_and_version, require_plugin_name = True)
assistant
#Here is Python code to fix the buggy line: add_plugin_name_and_version (add_plugin_name_and_version, require_plugin_name = True)
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add_plugin_name_and_version (parser, require_plugin_name = True)