indexing description : "Class X" author : "Volkan Arslan, Yann Mueller, Piotr Nienaltowski." date : "$Date: 18.05.2007$" revision : "1.0.0" class X create make feature -- Basic operations f is -- Do some computations do (create {EXECUTION_ENVIRONMENT}).sleep (60 * 1000 * 1000 * 1000) io.put_string ("Termination of feature f of X with id " + identifier.out + "%N") end feature {NONE} -- Implementation make (an_identifier: INTEGER) is -- Creation require an_identifier_valid: an_identifier >= 0 do identifier := an_identifier ensure an_identifier_set: identifier = an_identifier end identifier: INTEGER end -- class X