# File lib/rhc/rest/mock.rb, line 1006
    def unset_environment_variables(env_vars=[])
      if supports? "SET_UNSET_ENVIRONMENT_VARIABLES"
        env_vars.each { |item| environment_variables.delete_if { |env_var| env_var.name == item } }
      else
        raise RHC::EnvironmentVariablesNotSupportedException.new
      end
    end