'Adds a tool which is used to set external metadata'

def load_external_metadata_tool(self, toolbox):

    self.to_xml_file()
    set_meta_tool = toolbox.load_hidden_lib_tool('galaxy/datatypes/set_metadata_tool.xml')
    self.set_external_metadata_tool = set_meta_tool
    self.log.debug('Loaded    external    metadata    tool:    %s', self.set_external_metadata_tool.id)
