Container for Signatures @esignaturelist: the object which received the signal. @arg1: @esignaturelist: the object which received the signal. @arg1: @esignaturelist: the object which received the signal. @arg1: @gconf: @Returns: @signature_list: @gconf: @signature_list: @signature_list: @signature: @signature_list: @signature: @signature_list: @signature: @signature_list: @type: @key: @Returns: